A crystalline solid (A) reacts with hydrogen gas to form a monoatomic gas (B) and a highly associated liquid ( C).(A) is soluble in water and undergoes hydroloysis slowly to form (B),(C ) and a diatomic gas (D).When pure and dry(D) is subjected to a silent electric discharge an another pale blue gas (E) is produced which like (A) also acts a strong oxidising agent.(E) dissolves in potassium hydroxide forming an orange coloured solid which is paramagnetic in nature. (A) reacts with IF_5, SbF_5, PF_5 etc to form the addition compounds. (C ) forms an addition compound (F) with KF with when electrolysed in molten state forms a most reactive gas (G).(B) and (G) (taken in 2:1) ratio when heated in nickel tube at 400^@ C and 6 atm pressure forms (A).The first ionization energy (IE_1) of (B) is fairly close to (D). Gas (G) is produced by reacting K_2 MnF_6 with:

A crystalline solid (A) reacts with hydrogen gas to form a monoatomic

1.	A crystalline solid (A) reacts with hydrogen gas to form a monoatomic gas (B) and a highly associated liquid ( C).(A) is soluble in water and undergoes hydroloysis slowly to form (B),(C ) and a diatomic gas (D).When pure and dry(D) is subjected to a silent electric discharge an another pale blue gas (E) is produced which like (A) also acts a strong oxidising agent.(E) dissolves in potassium hydroxide forming an orange coloured solid which is paramagnetic in nature. (A) reacts with IF_5, SbF_5, PF_5 etc to form the addition compounds. (C ) forms an addition compound (F) with KF with when electrolysed in molten state forms a most reactive gas (G).(B) and (G) (taken in 2:1) ratio when heated in nickel tube at 400^@ C and 6 atm pressure forms (A).The first ionization energy (IE_1) of (B) is fairly close to (D). Gas (G) is produced by reacting K_2 MnF_6 with:
Answer» `SbF_5` `MnF_3` `KSbF_5` `MnF_5` SOLUTION :`2K_2MnF_6 + 4SbF_6 to 4 K [SbF_6] + 2MnF_3 + F_2`