Match the following pairs.

Match the following pairs.
  1. (a) - (i), (b) - (ii), (c) - (iv), (d) - (iii)
  2. (a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)
  3. (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
  4. (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)

Solution

$\begin{aligned} & \mathrm{O}^{-2}=10 \mathrm{e}^{-} \\ & \mathrm{Li}^{+2}=3-2=1 \mathrm{e}^{-} \\ & \mathrm{He}=2 \mathrm{e}^{-} \\ & \mathrm{Ca}^{+2}=20-2 \\ & =18 \mathrm{e}^{-}\end{aligned}$

Asked in: MHT CET 2022 (06 Aug Shift 2)

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