The correct statements among (a) to (d) are:
(a) saline hydrides produce H2 gas when reacted with H2O.
(b) reaction of LiAlH4 with BF3 leads to B2H6.
(c) PH3 and CH4 are electron - rich and electron - precise hydrides, respectively.
(d) HF and CH4 are called as molecular hydrides.
(1) (a),

Question

The correct statements among (a) to (d) are:
(a) saline hydrides produce H2 gas when reacted with H2O.
(b) reaction of LiAlH4 with BF3 leads to B2H6.
(c) PH3 and CH4 are electron - rich and electron - precise hydrides, respectively.
(d) HF and CH4 are called as molecular hydrides.
(1) (a), (b), (c) and (d)
(2) (a), (c) and (d) only
(3) (c) and (d) only
(4) (a), (b) and (c) only

Accepted Answer

(a), (b), (c) and (d). (a) Saline (ionic) hydrides like NaH react with water to give H2. (b) 4BF3 + 3LiAlH4 -> 2B2H6 + 3LiF + 3AlF3. (c) PH3 has a lone pair (electron-rich); CH4 has exactly enough electrons (electron-precise). (d) HF and CH4 are molecular hydrides. All four are correct.

Solution

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