$KH,\,Ca{H _2},\,Ba{H _2}$

$NaH,Si{H _4},KH$

$N{H _3},{B _2}{H _6}\,Al{H _3}$

$N{H _3},{H _2}O,HF$

Ionic hydride

Covelent hydride

Metallic hydride

Polymeric hydride

$NH _3, PH _3$

$NH _3, BiH _3$

$PH _3, BiH _3$

$BiH _3, AsH _3$

good electrical conductors when solid

easily reduced

good reducing agents

liquid at room temperature

$HF>HI>HBr>HCl$

$HI>HBr>HCl>HF$

$HF>HCl>HBr>HI$

$HCl>HBr>HI>HF$

$HF$

$H _2O$

$SiH _4$

$PH _3$

Among lanthanoids europioum and ytterbium form ionic hydrides

Density of ionic hydrides is less while the density of interstitial hydrides is more than the metals from which they are formed

The rate of reaction of alkali metals towards hydrogen decreases from lithium to ceasium

Hydrogen gas can be purified by the phenomenon of Occlusion of hydrogen by palladium

$H^{-} _{\left ( aq \right )}+H _{2}O\rightarrow H _{3}O^{-}$

$H^{-} _{\left ( aq \right )}+H _{2}O _{\left ( l \right )}\rightarrow OH^{-}+H _{2}$

$H^{-}+H _{2}O _{(l)}\rightarrow\ no\ reaction$

$None\ of\ the\ above$

$H^{+}$

$H _{9}O _{5}^{+}$

$H _{9}O _{4}^{+}$

$H _{3}O^+$

Au

Ni

Ca

Cu

Due to lower molecular masses $NH _{3}, H _{2}O$ and HF have lower boiling points than those of the subsequent group member hydrides

Due to higher electronegativity of N, O and F; $NH _{3}, H _{2}O$ and HF show hydrogen bonding and hence higher boiling points than the hydrides of their subsequent group members.

There is no regular trend in the boiling points of hydrides

Due to higher oxidation states of N, O and F, the boiling points of $NH _{3}, H _{2}O$ and HF are higher than the hydrides of their subsequent group members.

$B _2H _6$

$NH _3$

$H _2O$

$CH _4$

palladium, vanadium

manganese, lithium

nitrogen, filorine

carbon, nockel

Mo

W

Cr

Co

group 6

group 7

group 8

group 9

Groups 7, 8, 9

Group 13

Groups 15, 16, 17

Group 14

$NH _{3}$

$H _{2}O$

$HF$

$HCl$

A-6, B-2, C-4, D-5, E-1

A-6, B-2, C-4, D-3, E-1

A-6, B-4, C-2, D-3, E-15

A-5, B-4, C-2, D-3, E-1

$(A)\rightarrow (iii), (B)\rightarrow (iv), (C)\rightarrow (ii) (D)\rightarrow (i)$

$(A)\rightarrow (ii), (B)\rightarrow (iv), (C)\rightarrow (iii) (D)\rightarrow (i)$

$(A)\rightarrow (i), (B)\rightarrow (ii), (C)\rightarrow (iv) (D)\rightarrow (iii)$

$(A)\rightarrow (iii), (B)\rightarrow (ii), (C)\rightarrow (i) (D)\rightarrow (iv)$

$CaH _2 < BaH _2 < CH _4$

$CH _4 < CaH _2 < BaH _2$

$CH _4 < BaH _2 < CaH _2$

$BaH _2< CaH _2 < CH _4$

$BeH _2$

$NH _2$

$CaH _2$

$CuH _2$

Formation of halides

Formation of oxides

Electronic configuration

Atomicity

$NH _3$ and $B _2H _6$

$NaH$ and $CaH _2$

$NaH$ and $ NH _3$

$CaH _2$ and $B _2H _6$

electropositive

electronegative

both electropositive as well as electronegative

neither electropositive nor electronegative

Na

K

Ca

Zn