Correct Answer - Option 4 : 6, 6
CONCEPT:
In an atom's notation, ZXA ; z is an atomic number and A is the mass number.
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Protons and neutrons lie in the nucleus of an atom and electrons revolve around the nucleus.
Atomic number (Z) = number of protons (p)
Atomic mass number (A) = number of protons (p) + number of neutrons (n)
No. of protons = Z
No of neutrons = A - Z
CALCULATION:
The Carbon atom is presented by 6C12
Z = 6 and A = 12
No. of protons (p) = Z = 6
No of neutrons (n) = A - Z = 6
So the correct answer is option 4.
