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Questions and Answers
What are the mass numbers of atomic species X and Y?
What are the mass numbers of atomic species X and Y?
X: 12, Y: 14
What is the relation between atomic species X and Y?
What is the relation between atomic species X and Y?
Isotopes
True or False: J.J. Thomson proposed that the nucleus of an atom contains only nucleons.
True or False: J.J. Thomson proposed that the nucleus of an atom contains only nucleons.
False
True or False: A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
True or False: A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
What did Rutherford's alpha-particle scattering experiment lead to the discovery of?
What did Rutherford's alpha-particle scattering experiment lead to the discovery of?
Do isotopes of an element have the same physical properties?
Do isotopes of an element have the same physical properties?
What are the limitations of J.J. Thomson’s model of the atom?
What are the limitations of J.J. Thomson’s model of the atom?
What are the limitations of Rutherford’s model of the atom?
What are the limitations of Rutherford’s model of the atom?
Describe Bohr’s model of the atom.
Describe Bohr’s model of the atom.
What are the rules for writing the distribution of electrons in various shells for the first eighteen elements?
What are the rules for writing the distribution of electrons in various shells for the first eighteen elements?
Explain with examples the concepts of (i) Atomic number, (ii) Mass number, (iii) Isotopes, and (iv) Isobars.
Explain with examples the concepts of (i) Atomic number, (ii) Mass number, (iii) Isotopes, and (iv) Isobars.
Calculate the average atomic mass of a bromine atom given the isotopes 79 35 Br (49.7%) and 81 35 Br (50.3%).
Calculate the average atomic mass of a bromine atom given the isotopes 79 35 Br (49.7%) and 81 35 Br (50.3%).
How do you find the valency of chlorine, sulphur, and magnesium?
How do you find the valency of chlorine, sulphur, and magnesium?
If the number of electrons in an atom is 8 and the number of protons is also 8, what is the atomic number of the atom?
If the number of electrons in an atom is 8 and the number of protons is also 8, what is the atomic number of the atom?
Define atomic number and explain its significance.
Define atomic number and explain its significance.
What is the mass number of an atom and what does it depend on?
What is the mass number of an atom and what does it depend on?
Explain why atoms of the same element have the same atomic number.
Explain why atoms of the same element have the same atomic number.
How does the mass of an atom relate to the protons and neutrons in its nucleus?
How does the mass of an atom relate to the protons and neutrons in its nucleus?
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