The elements whose electronic configurations are 2,8,8,1 and 2,8,8 and 2,8,5 respectively are

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

Potassium, argon and phosphorous

Argon, potassium and phosphorous

Phosphorus, potassium and argon

Potassium, phosphorus and argon

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The electronic configuration of potassium is 2,8,8,1, electronic configuration of argon is 2,8,8, and electronic configuration of phosphorus is 2,8,5.
The atomic number of potassium (K) is 19 and so the electronic configuration is 2,8,8,1. The atomic number of argon (Ar) is 18 so the electronic configuration is 2,8,8. The atomic number of phosphorus (K) is 15 and so its electronic configuration is 2,8,5.

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET