OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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atomic weight is identical to atomic mass
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neutrons always equal the number of electrons
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electrons of a neutral atom always equal the number of protons
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neutrons always equal the number of protons
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Detailed explanation-1: -Thus, the given statement is true i.e.the number of protons and electrons is always the same in a neutral atom.
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: -Electrons are negatively charged species and protons are positively charged species. In a neutral atom, the number of electrons are always equal to the number of protons.
Detailed explanation-4: -The neutral atom can be characterised with the same number of protons and electrons. For the positively charged atom the number of protons will be greater than the number of neutrons. And for the negatively charged atom, the number of protons will be less than the number of electrons.
Detailed explanation-5: -Hence, option (A) is correct., an atom has an equal number of electrons, and protons are the correct option.