MCQ
Nuclear fusion produces
- AArgon
- BDeuterium
- ✓Helium
- DKrypton
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$(\log \,4 = 0.60,\, \log \,5 = 0.69)$

Reason $(R)$: $\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{+}$complex ion has an octahedral geometry.
In the light of the above statements, choose the most appropriate answer from the options given below :
(Given : $R =0.083\, L\, bar \,K ^{-1} \,mol ^{-1}$ )