Assertion (A): The IUPAC name of the element Dubnium is unnilpentium.
Reason (R) : Atomic number of the Dubnium is 105.

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

Both A and R are true and R is the correct explanation of A

A is incorrect and R is correct

Both A and R are true and R is not correct explanation of A

A is correct and R is incorrect

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

To naming the elements whose atomic number Z) is greater than 100, use IUPAC. For the element with atomic number 105 IUPAC name is unnilpentium and regular name is “Dubnium”.

Watch 3-min video & get full concept clarity

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

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!