Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8
Banner 9

Q.

Which of the following pairs are isotopes?


see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya

a

X20984 , X21084

b

Z23290, Z23191

c

A7935, A8036

d

B19228,B19225 

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

      X20984, X21084 are isotopic pairs.
Atoms belonging to the same element can have different numbers of neutrons due to which the mass number of each element differs while the atomic number remains the same. The different possible versions of each element are called isotopes. For example, Hydrogen and deuterium are two isotopic pairs which have the same atomic number 1 and mass numbers as 1 and 2 respectively.
 
Watch 3-min video & get full concept clarity

Ready to Test Your Skills?

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

Take Free Test

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
Which of the following pairs are isotopes?