Halides of Group 16

Q.

What is the hybridization and geometry of $S{F}_4$ ?

1. $s{p}^3$ , tetrahedral

2. $s{p}^{3}d$, octahedral

3. $s{p}^{3}d$, seesaw

4. None of these

Q. Which hybridization is present in NH3?is hybridization is present in all kinds of covalent compounds ?

Q. consider the following species ::-CN+, CN-, NO AND CN WHICH OF THIS WILL HAVE THE HIGHEST BOND ORDER??

Q. Define bond length in a molecule.

Q. Consider the following statements . (i) Hybridization of central atom in cation of PCl5(s) and PBr5(s) is same. (ii) Anionic form of PCl5(s) contains only eight bond angles 900 each. (iii) XeF4 and BrF4- are isostructural . (iv) Hybridization of central atom changes when NH3 combines with H+ (v) A σ bond can be formed between two px orbitals containing one unpaired electron each when they approach each other appropriately along x-axis. (vi) ClF3 is T-shaped. (vii) The correct order of oxygen-oxygen bond length is H2O2 > O3> O2. Out of the above statements , x is correct then value of x2 is

Q. What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example of each type.

Q. 78 0.44g of a colourless oxide of nitrogen occupies 224 ml at STP. The compound is :- (1) N2O (2) NO (3) N2O2 (4) NO2

Q. In which of the following bond angles on sp3 hybridised are not contracted due to lone pair of electrons ? a) H2O b) CH3OH c) OF2 d) CH3OCH3

Q. $S{F}_4$ can act as Lewis acid in the presence of strong Lewis base and as Lewis base in the presence strong Lewis acid.

1. True
2. False

Q. Chlorine peroxide is halide of oxygen having genral formula $E_2{X}_2$, where $E={16}^{th}groupelement$ and $X=halogen$

1. True
2. False

Q. The maximum number of 180^° angle possible between X-M-X bond for compounds with spd and sdd hybridization respectively are 1) 3, 3 2) 3, 1 3) 1, 3 4) 3, 0

Q.

Which of the following statements are correct about $S{F}_4$?

1. It is prepared by treating $SC{l}_2$ with a fluoride like $NaF$ in acetonitrile.

2. Its initial hydrolysis gives $S{O}_2$ and $HF$.

3. It has a square planar shape with the sulphur atom having 2 lone pairs.

4. $S$ atom has an expanded octet.

Q.

Which of the following statements are correct about $S{F}_4$?

1. It is prepared by treating $SC{l}_2$ with a fluoride like $NaF$ in acetonitrile.

2. Its initial hydrolysis gives $S{O}_2$ and $HF$.

3. It has a square planar shape with the sulphur atom having 2 lone pairs.

4. $S$ atom has an expanded octet.

Q. give geometry , shape, no.of lone pairs and bond pair on central atom N in NO₃^-

Q. The shape and geometry of $Xe{F}_2$ in vapor phase are respectively:

1. Bent and tetrahedral
2. Linear and tetrahedral
3. Angular and trigonal bipyramidal
4. Linear and trigonal bipyramidal