Question

Identify the position of the element ${}_{14}X$ in the periodic table.

• A. Period 4, Group 4
• B. Period 3, Group 4
• C. Period 4, Group 4
• D. Period 3, Group 14

Answer 1

The correct option is D Period 3, Group 14

Atomic number of X = 14
Electronic configuration: X (2,8,4)

Number of shells = 3
The number of shells occupied by the electrons in the atom of an element decides the period number.
Hence, X belongs to the third period of the periodic table.

Number of valence electrons = 4
The number of valence electrons remains the same down the group. All elements in group 14 has 4 valence electrons.
Hence, X belongs to the fourteenth group of the periodic table.
The number of