Atomic Structure Question
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Which statements about isotopes of the same element are correct?
1 - They are atoms which have the same chemical properties because they have the
same number of electrons in their outer shell.
2 - They are atoms which have the same number of electrons and neutrons but
different numbers of protons.
3 - They are atoms which have the same number of electrons and protons but different numbers of neutrons.
1 - They are atoms which have the same chemical properties because they have the
same number of electrons in their outer shell.
2 - They are atoms which have the same number of electrons and neutrons but
different numbers of protons.
3 - They are atoms which have the same number of electrons and protons but different numbers of neutrons.
- 1 and 2
- 1 and 3
- 2 only
- 3 only