Basic nature of `Lu(OH)_(2)` is less than that of `La(OH)_(3)`. Why?

Both PH_(3) and NH_(3) are Lewis bases, but basic strength of PH_(3) is less than that of NH_(3) . Explain.

Why I_1 of Al is less than that of Mg?

H_(2)S is less acidic than H_(2)Te . Why ?

(A): Aq. Na_(2)CO_(32) solution is more basic than that of aq. NaHCO_(3) . (R): The extent of hydrolysis of Na_(2)CO_(3) is less than that of NaHCO_(3)

Aniline is less basic than ammonia. Why?

(A): A mixture of Mg (OH)_(2) is better antacid than NaHCO_(3) . (R): NaHCO_(3) makes stomach alkaline and triggers the over production of acid where-as a mixture of Al(OH)_(3) and Mg(OH)_(2) does not increase the pH above 7 in stomach.

The atomic radius of gallium is less than that of aluminium why?

Tl(OH)_3 is less basic than TlOH . Why ?

Observe the following statements 1) Lanthanides actively participate in chemical reactions 2) The basic nature of hydroxides of lantha nides increases from La(OH)_3 to Lu(OH)_3 3) Lanthanides do not form coordinate compounds as readily as d-block metals The correct statements are

(A) The boiling point of C_2H_5OH is less than that of H_2O , though the molecular weight of C,H,OH is more than that of water. (R) C_2H_5OH molecules are not highly associated through hydrogen bonding as in water.