railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Chemistry Structure of Atom Atomic Structure
Two atoms are said to be isobars if.
1
they have same atomic number but different mass number.
2
they have same number of electrons but different number of neutrons.
3
they have same number of neutrons but different number of electrons.
4
sum of the number of protons and neutrons is same but the number of protons is different.