MCQ
Isoelectronic species are
- ✓${K^ + },\,C{l^ - }$
- B$N{a^ + },\,C{l^ - }$
- C$Na,\,Ar$
- D$N{a^ + },\,Ar$
$C{l^ - } = \,1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}.$
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(Molar mass of $Fe =56\, g\, mol ^{-1}$ )
Statement $I:$ According to Bohr's model of hydrogen atom, the angular momentum of an electron in a given stationary state is quantised.
Statement $II:$ The concept of electron in Bohr's orbit, violates the Heisenberg uncertainty principle.
In the light of the above statements, choose the most appropriate answer from the options given below: