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Q.

Is it true that the atomic number of an element indicates the number of protons in the nucleus?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
The atomic number is equal to the number of protons in the atom's nucleus (Z). In a neutral atom, there are exactly as many electrons as protons. The total number of protons and neutrons in the atom's nucleus is equal to the mass number (M) of the atom. We can therefore conclude that the stated statement is true based on the information that follows.
 
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