Group 16 Elements

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Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is ......... (a) $α$ -sulphur (b) $β$ -sulphur (c) $S_{2}$ -form

Among the following, the number of halide(s) which is/are inert to hydrolysis is ............... . (i) $BF_{3}$ (ii) $SiCl_{4}$ (iii) $PCl_{5}$ (iv) $SF_{6}$

Which of the following statements regarding sulphur is incorrect?

S_{2}

molecule is paramagnetic

20 0^{\circ} C

consists mostly of

S_{8}

60 0^{\circ} C

, the gas mainly consists of

S_{2}

The oxidation state of sulphur is never less than

+ 4

in its compounds

The correct order of electron gain enthalpy is

S > Se > Te > O

Te > Se > S > O

O > S > Se > Te

S > O > Se > Te

The oxoacid of sulphur that does not contain bond between sulphur atoms is

H_{2} S_{2} O_{3}

H_{2} S_{2} O_{4}

H_{2} S_{2} O_{7}

H_{2} S_{4} O_{6}

Chalcogen group elements are

The product obtained from the electrolytic oxidation of acidified sulphate solutions, is

HSO_{4}^{-}

HO_{3} SOOSO_{3} H

HO_{2} SOSO_{2} H

HO_{3} SOSO_{2} H

Which of the following is wrong statement?

ONO^{-}

are not isoelectronic

O_{3}

molecule is bent

Ozone is violet-black in solid sate

Ozone is diamagnetic gas

In polythionic acid, $H_{2} S_{x} O_{6}$ ( $x = 3$ to $5$ ) the oxidation state(s) of sulphur is/are

+ 5

+ 6

+ 3

+ 5

0

+ 5

LEVELJEE Advanced

Consider the sulphides $HgS$ , $PbS$ , $CuS$ , $Sb_{2} S_{3}$ , $As_{2} S_{3}$ and $CdS$ . Number of these sulphides soluble in $50% HNO_{3}$ is

The number of bonds between sulphur and oxygen atoms in $S_{2} O_{8}^{2 -}$ and the number of bonds between sulphur and sulphur atoms in rhombic sulphur, respectively, are