Diagram shows the electron configuration of an atom, of an element, for the electrons in the s and p orbitals Which group number represents the element shown?
A) 1
B) 2
C) 13
D) 15

Explanation:

15

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.