In the diagram of the simple second horizontal plane you can see  these extra neutrons of negative spin filling the two blank positions between protons. Using the following diagram of Kr-86 one concludes that the 86 nucleons with 36 protons and 50 neutrons have a structure of high symmetry . The number of electrons in a neutral atom is equal to the number of protons. Identify the missing information for each neutral isotope. Teacher Information: Activity Description: Interactive module that introduces atomic structure. From the charge, we know that the cation has 2 more protons than electrons, so there are 82 protons – 2 = 80 electrons. Pressure: Definition, Units, and Conversions, Electron Configurations in Atomic Energy Levels, The Kinetic Molecular Theory: Properties of Gases, States of Matter and Chemical Versus Physical Changes to Matter, Boyle's Law: Gas Pressure and Volume Relationship, Chemical Reactions and Balancing Chemical Equations, Who Was John Dalton? For example, a carbon atom weighs less than 2 × 10-23 g, and an electron has a charge of less than 2 × 10-19 C (coulomb). # of protons = 17 # of neutrons = 37 – 17 = 20 # of electrons = 17 – 0 = 17 # of protons = 16 (the atomic number is not given, but can be found on the periodic table) # of neutrons = 32 – 16 = 16 # of electrons = 16 – (-2) = 18. X Z A neutrons Complete symbol Nd 60 114 84 11460Nd Mg 12 24 12 2412Mg Gd 64 158 94 15864Gd Cl 17 37 20 3717Cl How many electrons protons and neutrons does cesium have? How many electrons are in the element Rn? (b) We know from the periodic table that chlorine has 17 protons. The nucleus of an atom determines its mass number. number of neutrons: number of protons: number of electrons: A neutral isotope has a mass number of 65 and 36 neutrons. Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library. Selenium (34 Se) has six natural isotopes that occur in significant quantities, along with the trace isotope 79 Se, which occurs in minute quantities in uranium ores. The isotope is selenium-78 with a charge of 2-. Determine the number of neutrons, protons, and electrons in this ion. For purposes of high symmetry this structure has the deuteron p33n33 of S= -1 under the first horizontal plane, or under the parallelepiped  of Mg-while the symmetrical deuteron p34n34 of S =+1 is over the sixth horizontal plane, or above the parallelepiped of Mg24. STRUCTURE OF Se-74, Se-76, Se-77, Se-78, Se-80 AND Se-82, Selenium (Se) with 34 protons (even number of protons) has a structure of high symmetry. Selenium (Se) with 34 protons (even number of protons) has a structure of high symmetry. © copyright 2003-2020 Study.com. Pages 71. Explanation of 4 Observations Three subatomic particles were proposed to explain the four observations made by Thomson and Rutherford: protons, electrons, and neutrons. What isotope is it? Our experts can answer your tough homework and study questions. Figure \(\PageIndex{1}\): Electrons are much smaller than protons or neutrons. The Se-77which contains seven extra neutrons ( odd number) with S=-1/2 receives at blank positions  three extra neutrons of positive spin and four extra neutrons of negative spin. c. 20 protons, 22 neutrons, and 18 electrons. Because the nucleus contains neutrons and protons, the sum of these particles dictates the mass number. Se-30 has a mass number (A) of 30. Selenium (atomic symbol: Se, atomic number: 34) is a Block P, Group 16, Period 4 element with an atomic radius of 78.96. Test Prep. The mass number 204 – 82 protons = 122 neutrons. Uploaded By brobroy. For each selenium atom, there are 34 protons, 45 neutrons, 34 electrons. If neutrally charged, the number of protons is equal to the number of electrons. Se has a atomic number (Z) of 34, with usually around 79 nucleons (Mass number; A) , so has 34 protons and 45 neutrons, If it is not an ion Se would have 34 electrons. "Demokritos" (2002) NUCLEAR STRUCTURE REJECTS RELATIVITY, N.C.S.R. Thus it has five stable isotopes like Se-74, Se-76, Se-77, Se-78 and Se-80. Identify the number of protons and electrons in the Sc 3+ ion. a. Solid sodium chloride contains equal numbers of cations (Na+) and anions (Cl−), thus maintaining electrical neutrality. b. The standard atomic weight of selenium (Se) is 78.96 g/mol (gram per mole). This preview shows page 36 - 44 out of 71 pages. Nevertheless today many physicist continue to apply not the well-established laws but the various fallacious nuclear structure models which lead to complications . "Demokritos" (2002) NUCLEAR STRUCTURE REJECTS RELATIVITY, Historically the discovery of the assumed uncharged neutron (1932) along with the invalid relativity (EXPERIMENTS REJECT RELATIVITY) led to the abandonment of the well-established electromagnetic laws, in favour of various contradicting nuclear theories,  which could not lead to the nuclear structure. Learning objectives: After this activity, the student will be able to describe the basic structure of matter, name the parts of an atom, have experience using the Periodic Table, explain elements, and have the background to understand isotopes. e. 20 protons, 20 neutrons, and 22 electrons 7. The Se-82 has 14 extra neutrons which led me to discover  the structure of the above nuclides by using its high symmetry forming 14 blank positions able to receive 14 extra neutrons of opposite spins. Electrons account for the volume of an atom. Under this physics crisis and using the charged UP and DOWN quarks , discovered by Gell-Mann and Zweig,  I published my paper “Nuclear structure is governed by the fundamental laws of electromagnetism ” (2003), which led to my discovery of the new structure of protons and neutrons given by, proton = [93(dud) + 5d + 4u ] = 288 quarks = mass of 1836.15 electrons, neutron = [92(dud) + 4u + 8d ] = 288 quarks = mass of 1838.68 electrons. An ion has a mass number of 65, 36 neutrons, and a charge of +1 . The paper was also presented at a nuclear conference held at NCSR "Demokritos" (2002). Selenium (Se). Thus it has five stable isotopes like Se-74, Se-76, Se-77, Se-78 and Se-80. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. Selenium (Se) has an atomic number of 34. which means in a balance atom Se will have 34 protons and 34 electrons. Especially the structure of Se-74 with S=0 contains four extra neutrons of opposite spin, while the Se-76 of S=0 contains six extra neutrons of opposite spins. The nucleus consists of 34 protons (red) and 46 neutrons (blue). Whereas the Se-80 of S=0  and Se-82  of S=0  (even number of extra neutrons)  contain 12 extra neutrons of opposite spin and 14 extra neutrons of opposite spin respectively. Element Protons Neutrons Electrons Mass number Complete symbol Cu 29 36 29 65 6529Cu Kr 36 50 36 86 8636Kr Pt 78 117 78 195 19578Pt Br 35 46 35 81 8135Br 5. Especially at the square of p33n33 and n35p35 one observes the two extra neutrons n(-1/2) and n(-1/2) filling the two blank positions formed by the p33 and p21 as well as by p35 and p22. 34 protons 44 neutrons 34 electrons. An element's atomic number is defined by the number of protons it has. How many protons, neutrons, and electrons are in: 13 How many protons, neutrons, and electrons are in: 14 C14 6 A Se ion has a mass number of 78 and a charge of -2. Note that  the above stable nuclides have spin S=0 except the Se-77 which has spin S=-1/2. See more Selenium products. a. 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Five of these isotopes are stable: 74 Se, 76 Se, 77 Se, 78 Se, and 80 Se. There are as many electrons as there are protons. When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu) and the fundamental unit of charge (e). How many protons and electrons are in se 78 34 2. A Se ion has a mass number of 78 and a charge of -2. Atomic Number – Protons, Electrons and Neutrons in Selenium. What does the following element description... An atom containing 34 protons, 43 neutrons, and 34... How many protons and neutrons are there in 98 43... What is the mass number of an isotope of mercury... Where do you find the atomic number of an... An unknown nucleus has twice the volume of a... How many protons, neutrons and electrons are in... How many neutrons, protons, and electrons are in... What are the atomic numbers of silver and gold? They are not shown because they are behind the p33 and in front of p34 respectively. The Se-82 is characterized unstable nuclide having a very long half life, and for practical purposes can be considered to be stable. Su masa es 1/1,837 de la masa de un protón. Therefore,the number of neutrons in selenium (Se) is 45 here for this isotope.Remember that neutrons are present in the nucleous of selenium (Se) and it's charge is zero. d. 22 protons, 18 neutrons, and 18 electrons. Thus, we have a total of 44 neutrons (subtracting 34 from 78). The mass number 37 – 17 protons = 20 neutrons. Additional Practice. Determine the number of neutrons, protons, and electrons in this neutral isotope. Identify the element symbol, and determine the number of protons and electrons in this ion. The atomic number gives the number of ____ in the nucleus. Name: Selenium Symbol: Se Atomic Number: 34 Atomic Mass: 78.96 amu Melting Point: 217.0 °C (490.15 K, 422.6 °F) Boiling Point: 684.9 °C (958.05005 K, 1264.8201 °F) Number of Protons/Electrons: 34 Number of Neutrons: 45 Classification: Non-metal Crystal Structure: Hexagonal Density @ 293 K: 4.79 g/cm 3 Color: gray Atomic Structure Determine the number of neutrons, protons, and electrons in this ion. The atomic number of Se is 34. When an atom is neutrally charged, the number of protons is equal to the number of electrons. Protons. Especially at all the symmetrical six horizontal  planes  one observes  24 deuterons of opposite spins. A Se ion has a mass number of 75 and a charge of −2 . Services, Working Scholars® Bringing Tuition-Free College to the Community. This chemistry video tutorial explains how to calculate the number of protons, neutrons, and electrons in an atom or in an ion. The other two particles are the neutron and electron. For example the p13n13 is in front of p3n3 while the p20n20 is behind the p10n10. Also the 14 extra neutrons of opposite spins are not shown. Here the 8  deuterons of opposite spins from p13n13 to p20n20 are not shown. Se must have 34 protons to be Se, An isotope or element with a mass number 30 can't be Se. The number of neutrons is equal to the difference between the mass number … In fact, here one can see the 9 charged quarks in proton and the 12 ones in neutron able to give the charge distributions in nucleons for revealing the strong electromagnetic force for the nuclear binding in the correct nuclear structure by applying  the laws of electromagnetism. However, we are told that the ion is charged. Number of protons in selenium (Se) is 34.Protons are present in the nucleus of selenium (Se) . Protons- 82 Neutrons- 128 Electrons- 78 A _______ is a subatomic particle that has mass nearly equal to that of a proton, but it carries no electrical charge. Therefore it has 30 nucleons in its nucleus. Selenium, Se, has an atomic number of 34 and hence it has a total of 34 protons. A se atom has a mass number 78. p34.........n34                                 p34n34 over n11p11, p22....... n11.........p11…… n28                    Sixth horizontal plane, n24…….p9..........n9 …….p30                     Fifth horizontal plane, p26.........n7..........p7........n32                     Fourth horizontal plane, n25……….p5........n5……p31                     Third horizontal plane, p23……..n3……..p3……..n29                      Second horizontal plane, n21........p1........n1.........p27                        First horizontal plane, p33.......n33                                 p33n33 under the n2p2, DIAGRAM OF THE SIMPE SECOND HORIZONTAL PLANE IN WHICH ALL NUCLEONS ARE SHOWN, HERE THE EXTRA n41(-1/2) MAKES THE BONDS LIKE( n41-p23) AND ( n41-p13), WHILE THE EXTRA n43(-1/2) MAKES THE BONDS LIKE (n43-p29) AND (n43- p14), n23..........p4.............n4.................p29, p23...........n3............p3..............n29, EINSTEIN’S WRONG ASSUMPTIONS IN SPECIAL RELATIVITY, UNIFIED FORCES SOLVE THE CRISIS OF PHYSICS, Nuclear structure is governed by the fundamental laws of electromagnetism, disc of the atomic philosopher Democritus, https://lefteris-kaliambos.wikia.org/wiki/STRUCTURE_OF_Se-74,_Se-76,_Se-77,_Se-78,_Se-80_AND_Se-82?oldid=10787. 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