defence exam Indian Army Nursing Assistant Mock Test Series 2025 General Science Chemistry Classification of Elements and Periodicity in Properties
समूह 18 के तत्वों के गलनांक का क्रम क्या है?
1
He < Ne < Ar < Kr < Xe
2
He < Ar < Ne < Kr < Xe
3
Xe < Kr < Ar < Ne < He
4
Xe < Ar < Ne < Kr < He