Question

The mass number of an element is 24. If the number of electrons in this atom is 12,
calculate the number of protons, neutrons and atomic mass. Write the electronic
configuration of this element

Answer 1

Explanation:

Fundamental properties of atoms including atomic number and atomic mass. The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.

Answer 2

Answer:

2,8,2

or

1s2 2s2 2p6 3s2

Explanation:

element is magnesium

having 12 electrons,

no. of protons =no. of electrons = atomic no. i.e 12

no. of netrons = mass no./ atomic mass - atomic no.( 24-12 = 12)

atomic mass = mass number i.e 24