JEE Main 12 Jan 2019 Morning Question 7

Question: The element with Z = 120 (not yet discovered) will be an/a [JEE Main Online Paper Held On 12-Jan-2019 Morning]

Options:

A) inner-transition metal

B) alkaline earth metal

C) alkali metal

D) transition metal.

Show Answer

Answer:

Correct Answer: B

Solution:

  • Electronic configuration of element Og (118) is $ [Rn]5f^{14}6d^{10}7s^{2}7p^{6}. $ Thus, next electron will go in 8s-orbital. Thus, element with Z = 120 will be an alkaline earth metal.