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In a neutral atom there are 13 electrons, and number of neutrons are 14 then find it’s mass number is

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answer is D.

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Detailed Solution

In a neutral atom, number of electrons is equal to the number of protons present in the nucleus (atomic number Z = number of protons).

Number of protons = 13

Number of neutrons = 14

Therefore mass number = number of protons + number of neutrons

Mass number(A) = Z + n

Mass number(A) = 13+14 =27

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