Among the following which is/are correct regarding abnormal properties of lithium in IA group. A) LiHCO_(3) is not obtained in solid state while other hydrogen carbonates are solids B) Reddish brown NO_(2) is not obtained in the thermal decomposition of LiNO_(3) C) Lithium unlike other alkalimetals forns no ethynide on reaction with ethyne D)Lithium is much harder than other alkali metals

Among the following which is/are correct regarding abnormal properties

1.	Among the following which is/are correct regarding abnormal properties of lithium in IA group. A) LiHCO_(3) is not obtained in solid state while other hydrogen carbonates are solids B) Reddish brown NO_(2) is not obtained in the thermal decomposition of LiNO_(3) C) Lithium unlike other alkalimetals forns no ethynide on reaction with ethyne D)Lithium is much harder than other alkali metals
Answer» Only A and B Only A and C only B and D Only A, C and D Answer :D