Consider the following statements and arrange in the order of true/false as given in the codes . `S_1`:Concentrated solution of an alkali metal in liq
Consider the following statements and arrange in the order of true/false as given in the codes .
`S_1`:Concentrated solution of an alkali metal in liquid ammonia is diamagnetic.
`S_2`:Increasing stability of the peroxide and super oxide of alkaline earth metal down the group is due to the stabilisation of large anions by large cations through lattice energy effects.
`S_3`:In the vapour phase `BeCl_2` tends to form a chloro-bridged dimer.
`S_4`:Beryllium hydroxide reacts with acid and alkali both to form `[Be(OH_2)_4]Cl_2` and `[Be(OH)_4]^(2-)` respectively.
A. T T T T
B. F F F F
C. T F T F
D. F T F T
1 Answers
Correct Answer - A
`S_1`:In concentrated solution unpaired electrons pair up together and become dimagnetic
`S_2 and S_3` are correct statements.
`S_4:Be(OH)_2+2OH^(-)to[Be(OH)_4]^(2-)` beryliate ion
`Be(OH)_2 + 2HCl+2H_2Oto[Be(OH_2)_4]Cl_2`