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

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