Question

The atomic mass of an element whose atoms consist of six protons, seven neutrons, and six electrons is _____. 6 12 13 19

Answer 1

Given the formula for neutrons = atomic mass - atomic number/protons/ electrons (assuming it is a neutral atom).
atomic mass = neutrons + atomic number/protons/ electrons
atomic mass = 7 + 6
atomic mass = 13

The atomic mass of this element is therefore 13 amu.

Answer 2

Answer: Option (c) is the correct answer.

Explanation:

Atomic mass is the sum of total number of protons and neutrons present in an atom. Whereas atomic number is the total number of protons present in an atom.

And when an atom is neutral then the number of protons equal the number of electrons.

So,     atomic mass = no. of protons + no. of neutrons

                                = 6 + 7

                                = 13

Thus, we can conclude that the atomic mass of an element whose atoms consist of six protons, seven neutrons, and six electrons is 13.