Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Classification of Elements and Periodicity in Properties
_____ are atoms having the same mass number but different atomic numbers
1
Isotopes
2
Isobars
3
Isotherms
4
More than one of the above
5
None of the above