Arrange in the decreasing order of acidic nature and justify, `BF_3`, `BCl_3`, `BBr_3`.

Arrange the following in the increasing order of acidic character.

Arrange H_2O, H_2S and H_2Se in decreasing order of acid strength?

Arrange HCl, HI, HBr, HF in increasing order of acidic strength.

Arrange the following in the decreasing order of their acidic strength and also give reason for it. HF,HBr,HCl

Arrange the following oxoacids in decreasing order of acidic strength: HClO, HClO_2, HClO_3,HClO_4 .

Arrange the following compounds in the decreasing order of basicity :

Arrange the following compounds in the decreasing order of basicity :

Arrange 1^(@), 2^(@) and 3^(@) alcohols in decreasing order of acidic strength.

Arrange the following in the increasing order of acidity : CHCl2 COOH , CCl3COOH , CH2ClCOOH