Classification Of Elements And Periodicity In Properties Ques 172
Question: Which one of the following is an s - block element [MP PMT 1999]
Options:
A) Aluminium
B) Chromium
C) Niobium
D) Potassium
Show Answer
Answer:
Correct Answer: D
Solution:
Potassium, $ K-[ Ar ],4s^{1} $ .