Question

If the atomic number of an element is $58$, it will be placed in the periodic table in the:

• A. III B gp and $6^{th}$ period
• B. IV B gp and $6^{th}$ period
• C. VB gp and $7^{th}$ period
• D. None of the above

Answer 1

The correct option is A III B gp and $6^{th}$ period

The element with atomic number $58$ is $Ce$.
It belongs to lanthanide series and is placed in III B group and sixth period.