Which of the statements given below is incorrect?
1. is an anhydride of perchloric acid
2. molecule is bent
3. ONF is isoelectronic with
4. is an oxide of fluorine
The variation of the boiling point of the hydrogen halides is in the order HF > HI > HBr > HCl.
What explains the higher boiling point of hydrogen fluoride?
|1.||The electronegativity of flourine is much higher than other elements in the group|
|2.||There is strong hydrogen bonding between HF molecules|
|3.||The bond energy of HF molecules is greater than in other hydrogen halides|
|4.||The effect of nuclear shielding is much reduced in flourine which polarizes the HF molecule|
The strong reducing behaviour of H3PO2 is due to
1. Presence of one -OH group and two P-H bonds
2. High electron gain enthalpy of phosphorus
3. High oxidation state of phosphorus
4. Presence of two -OH groups and one P-H bonds
The acidity of diprotic acids in aqueous solution increases in the order:
1. H2S < H2Se < H2Te
2. H2Se < H2S < H2Te
3. H2Te < H2S < H2Se
4. H2Se < H2Te < H2S
Which of the following compounds does not release oxygen when heated?
Which of the following is incorrect with regards to oxoacids of phosphorus?
|1.||Orthophosphoric acid is used in the manufacture of triple superphosphate|
|2.||Hypophosphorous acid is a diprotic acid|
|3.||All oxoacids contain tetrahedral four coordinated phosphorus|
|4.||All oxoacids contain at least one P=O unit and one P-OH group|
Sulphur trioxide can be obtained by which of the following reaction
In which of the following arrangements the given sequence is not strictly according to the property indicated against it ?
Which of the following compounds has the lowest melting point?