Question

a. si
b. o
c. f
d. xe

Explanation:

Step1: Count the electrons

Count the number of electron - pairs in the orbital diagram. Each pair represents 2 electrons. There are 14 electrons in total (2 in 1s, 2 in 2s, 6 in 2p, 2 in 3s, and 2 in 3p).

Step2: Identify the element

The atomic number of an element is equal to the number of electrons in a neutral atom. The element with atomic number 14 is Silicon (Si).

Answer:

A. Si