GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -So in this number of protons, P is equal to two and number of neutrons is equal to mass number, which is for minus number of protons, that is equal to two. So here the number of protons and number of neutrons are same.
Detailed explanation-2: -The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
Detailed explanation-3: -For most of the 16 lightest elements (up to oxygen) the number of neutrons is equal to the number of protons.
Detailed explanation-4: -Thus, the given statement is true i.e.the number of protons and electrons is always the same in a neutral atom.