MCQ
The alkaline earth metal whose carbonate has no natural occurrence is :
- A$Ba$
- B$Ca$
- C$Mg$
- ✓$Be$
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(Assume: Momentum is conserved when photon is absorbed. Use: Planck constant $=6.6 \times 10^{-34} J s$, Avogadro number $=6 \times 10^{23} mol ^{-1}$, Molar mass of $He =4 g mol ^{-1}$ )
