-p-Block elements - I Chemistry - -p-Block elements - I

• A
  $A-III, B-IV, C-I, D-II$
• B
  $A-II, B-IV, C-I, D-III$
• C
  $A-IV, B-I, C-II, D-III$
• ✓
  $A-III, B-I, C-IV, D-II$

Answer: D.

• ✓
  $TlI > TlI _3$
• B
  $TlCl _3 > TlCl$
• C
  $\operatorname{InI}_3 > \ln I$
• D
  $AlCl > AlCl _3$

Answer: A.

• A
  The four terminal $B-H$ bonds are two centre two electron bonds.
• B
  The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.
• ✓
  Both the Boron atoms are $s p^{2}$ hybridised.
• D
  There are two $3-$centre$-2-$electron bonds.

Answer: C.

• A
  Diamond is covalent and graphite is ionic.
• ✓
  Diamond is $s p^{3}$ hybridised and graphite is $s p^{2}$ hybridized.
• C
  Both diamond and graphite are used as dry lubricants.
• D
  Diamond and graphite have two dimensional network.

Answer: B.

• A
  $P _{4} O _{10( s )}+6 H _{2} O _{( I )} \rightarrow 4 H _{3} PO _{4( aq )}$
• B
  $SiCl _{4( l )}+2 H _{2} O _{( I )} \rightarrow SiO _{2( s )}+4 HCl _{( aq )}$
• C
  $Li _{3} N _{( s )}+3 H _{2} O _{( i )} \rightarrow NH _{3( g )}+3 LiOH _{( aq )}$
• ✓
  $2 F _{2( g )}+2 H _{2} O _{( l )} \rightarrow 4 HF _{( aq )}+ O _{2( g )}$

Answer: D.