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Consider a neutral atom with 20 protons and 22 neutrons. The mass number of this atom is- and the atomic number is -A 22; 42B) 42; 20C)20; 4222; 20

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Answer

B) 42; 20

Explanation

Atomic mass = number of protons + number of neutrons

Atomic mass = 20 + 22 = 42

Atomic number - The number of protons in an atom of an element is its atomic number

Therefore atomic number is 20

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