| Column I | Column II | ||
| (i) | \[Li\] | (a) | Insoluble sulphate |
| (ii) | \[Na\] | (b) | Strongest mono acidic base |
| (iii) | \[Ca\] | (c) | Most negative \[{{E}^{{}^\circ }}\] value among alkali metals |
| (iv) | Ba | (d) | Insoluble oxalate |
| (e) | \[6{{s}^{2}}\]outer electronic configuration | ||
Answer:
(i?c, d), (ii?b), (iii?d),
(iv?a, e)
Lithium has the most negative \[E{}^\circ
\]value, i.e., - 3.04. Its oxalate is insoluble in water.
Amongst the hydroxides, \[LiOH,\text{
}NaOH,\text{ }Ca{{(OH)}_{2}}\]and\[Ba{{(OH)}_{2}}\], the strongest mono acidic
base is\[NaOH\].
Calcium oxalate is insoluble in
water. Barium sulphate is insoluble in water. The outermost electronic shell of
Ba has\[6{{s}^{2}}\] configuration.
\[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}}4{{s}^{2}}4{{p}^{6}}4{{d}^{10}},5{{s}^{2}}5{{p}^{6}},6{{s}^{2}}\]
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