Periodic Classification of Elements MCQ Question with Answer

Question No : 15
Elements whose atoms have incompletely filled penultimate energy levels are known as

Question No : 16
The heaviest element is

Question No : 17
Which of the following have maximum size?

Question No : 18
An atom of an element has electronic configuration $\left(Ar\right) 4s^{2}3d^5$, the element belongs to block

Question No : 19
Which of the following is not an s-block element?

Question No : 20
Elements whose atoms have incompletely filled penultimate and anti-penultimate energy levels are known as

Question No : 21
Which of the following has the maximum size?