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Match the species in Column I with the geometry/shape in Column II.

Column I

Column II

(i) $H_{3}O^{+}$

(a) Linear

(ii) $HC\equiv CH$

(b) Angular

(iii) $ClO{_{2}}^{-}$

(c) Tetrahedral

(iv) $NH{_{4}}^{+}$

(d) Trigonal bipyramidal

–

(e) Pyramidal

Answers (1)

(i) →(e); (ii) →(a); (iii) →(b); (iv) →(c)

Explanation :

Column I	Column II
1. $H_{3}O^{+}$	Oxygen has 3 bond pairs and 1 lone pair (pyramidal shape)
2. $HC\equiv CH$	Linear sp hybridization
$ClO{_{2}}^{-}$	Cl has 2 bond pairs and two lone pairs (Angular shape)
$NH{_{4}}^{+}$	N has 4 bond pairs and no lone pair (tetrahedral)

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