Question

An element X belongs to fourth period and fifteenth group of the periodic table. Which one of the following is true regarding the outer electronic configuration of X? It has

a) partially filled d-orbitals and completely filled s-orbitals

b) completely filled s-orbital and completely filled p-orbitals

c) completely filled s-orbital and half-filled p-orbitals

d) half-filled d-orbitals and completely filled s-orbitals ​

Answer 1

Answer:

c) completely filled s-orbital and half-filled p-orbitals

Explanation:

Since, element 'X' belongs to fourth period, n=4. For fifteenth group, general outer electronic configuration is ns2np3.

Answer 2

Answer:

option c is the correct