Question

calculate the atomic number of an element whose mass number is 24 and number of neutrons is 12​

Answer 1

Explanation:

atomic number= protons present in nucleus

atomic number= mass number- neutrons

= 24-12

= 12

therefore the atomic no. is 12

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Answer 2

Answer:

Atomic number 12

Explanation:

Atomic number= no. of protons

Now ,

Mass no. = no. of neutrons + no. of protons

=> 24 = 12 + no. of protons

=> no. of protons= 24-12

= 12

Hence , Atomic number is equal to 12

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