`BF_(3)` reacts with LiH and forms a compound A. The compound A reacts with water to give the compound B. A reacts with ammonia at 390 K and form C. Identify (A), (B) and (C).

The compound that reacts the fastest with sodium methoxide is

Deuterium reacts with ammonia to form ________

A deuterium compound (A) which is used as a moderator in nuclear reactor reacts with Ca to form compound B. A reacts with SO_2 to give compound C. Upon electrolysis compound A gives deuterium molecule. Identify A, B and C.

XeF_(4) reacts with water at -80^(@)C to give :

An element occupies group number 1 and period number 2. This element burns with air and forms compound A. With water, it gives compound B, with hydrogen it forms an ionic compound C. Identify the elements, A, B and C.

The compound that reacts fastest with Lucas reagent is

An element occupies group No.16 and period number 2. This element on passing through silence electric discharge forms (A). (A) also reacts with lead sulphide and forms (B). (A) also reacts with BaO_(2) and forms (C). It reacts with H_(2)O_(2) and forms (D). Identify the dement (A), (B), (C) and (D).