QBManager

07. The p-BLOCK ELEMENTS (XII)

189582 On adding water to $B i C l_{3}$ solution in $H C l$ , the compound produced is

1

B i_{2} O_{3}

2

B i (O H)_{3}

3

B i O C l

4

B i O C l_{2}

Explanation:

(c) $B i C l_{3} + H_{2} O \to B i O C l + 2 H C l$

07. The p-BLOCK ELEMENTS (XII)

188674 Choose the incorrect formula out of the four compounds for an element $X$ below

1

X_{2} O_{3}

2

X_{2} C l_{3}

3

X_{2} (S O_{4})_{3}

4

X P O_{4}

Explanation:

$X_{2} O_{3} \Rightarrow X^{3 +} O^{2 -}$
$X_{2} C l_{3} \Rightarrow X^{3 +} C l^{2 -}$
$X_{2} (S O_{4})_{3} \Rightarrow X^{3 +} S O_{4}^{2 -}$
$X P O_{4} \Rightarrow X^{3 +} P O_{4}^{3 -}$
Because $C l^{2 -}$ does not exist. So, $X_{2} C l_{3}$ is incorrect. The correct formula should be $X C l_{3}$ .

07. The p-BLOCK ELEMENTS (XII)

188675 Shapes of certain interhalogen compounds are stated below. Which one of them is not correctly stated?

1

I F_{7}

: pentagonal bipyramid

2

B r F_{5}

: trigonal bipyramid

3

B r F_{3}

: planar

T -

shaped

4

I C l_{3}

: planar dimeric

Explanation:

The molecular geometry of $B r F_{5}$ is square pyramidal with asymmetric charge distribution on the central atom. 822-s1036

07. The p-BLOCK ELEMENTS (XII)

188676 Which of the following xenon-oxo compounds may not be obtained by hydrolysis of xenon fluorides?

1

X e O_{2} F_{2}

2

X e O F_{4}

3

X e O_{3}

4

X e O_{4}

Explanation:

$X e F_{6} + H_{2} O \overset{p a r t i a l}{\to} X e O F_{4} + 2 H F$
$X e F_{6} + 2 H_{2} O \overset{p a r t i a l}{\to} X e O_{2} F_{2} + 4 H F$
$X e F_{6} + 3 H_{2} O \overset{c o m p u t e}{\to} X e O_{3} + 6 H F$

07. The p-BLOCK ELEMENTS (XII)

189582 On adding water to $B i C l_{3}$ solution in $H C l$ , the compound produced is

1

B i_{2} O_{3}

2

B i (O H)_{3}

3

B i O C l

4

B i O C l_{2}

Explanation:

(c) $B i C l_{3} + H_{2} O \to B i O C l + 2 H C l$

07. The p-BLOCK ELEMENTS (XII)

188674 Choose the incorrect formula out of the four compounds for an element $X$ below

1

X_{2} O_{3}

2

X_{2} C l_{3}

3

X_{2} (S O_{4})_{3}

4

X P O_{4}

Explanation:

$X_{2} O_{3} \Rightarrow X^{3 +} O^{2 -}$
$X_{2} C l_{3} \Rightarrow X^{3 +} C l^{2 -}$
$X_{2} (S O_{4})_{3} \Rightarrow X^{3 +} S O_{4}^{2 -}$
$X P O_{4} \Rightarrow X^{3 +} P O_{4}^{3 -}$
Because $C l^{2 -}$ does not exist. So, $X_{2} C l_{3}$ is incorrect. The correct formula should be $X C l_{3}$ .

07. The p-BLOCK ELEMENTS (XII)

188675 Shapes of certain interhalogen compounds are stated below. Which one of them is not correctly stated?

1

I F_{7}

: pentagonal bipyramid

2

B r F_{5}

: trigonal bipyramid

3

B r F_{3}

: planar

T -

shaped

4

I C l_{3}

: planar dimeric

Explanation:

The molecular geometry of $B r F_{5}$ is square pyramidal with asymmetric charge distribution on the central atom. 822-s1036

07. The p-BLOCK ELEMENTS (XII)

188676 Which of the following xenon-oxo compounds may not be obtained by hydrolysis of xenon fluorides?

1

X e O_{2} F_{2}

2

X e O F_{4}

3

X e O_{3}

4

X e O_{4}

Explanation:

$X e F_{6} + H_{2} O \overset{p a r t i a l}{\to} X e O F_{4} + 2 H F$
$X e F_{6} + 2 H_{2} O \overset{p a r t i a l}{\to} X e O_{2} F_{2} + 4 H F$
$X e F_{6} + 3 H_{2} O \overset{c o m p u t e}{\to} X e O_{3} + 6 H F$

07. The p-BLOCK ELEMENTS (XII)

189582 On adding water to $B i C l_{3}$ solution in $H C l$ , the compound produced is

1

B i_{2} O_{3}

2

B i (O H)_{3}

3

B i O C l

4

B i O C l_{2}

Explanation:

(c) $B i C l_{3} + H_{2} O \to B i O C l + 2 H C l$

07. The p-BLOCK ELEMENTS (XII)

188674 Choose the incorrect formula out of the four compounds for an element $X$ below

1

X_{2} O_{3}

2

X_{2} C l_{3}

3

X_{2} (S O_{4})_{3}

4

X P O_{4}

Explanation:

$X_{2} O_{3} \Rightarrow X^{3 +} O^{2 -}$
$X_{2} C l_{3} \Rightarrow X^{3 +} C l^{2 -}$
$X_{2} (S O_{4})_{3} \Rightarrow X^{3 +} S O_{4}^{2 -}$
$X P O_{4} \Rightarrow X^{3 +} P O_{4}^{3 -}$
Because $C l^{2 -}$ does not exist. So, $X_{2} C l_{3}$ is incorrect. The correct formula should be $X C l_{3}$ .

07. The p-BLOCK ELEMENTS (XII)

188675 Shapes of certain interhalogen compounds are stated below. Which one of them is not correctly stated?

1

I F_{7}

: pentagonal bipyramid

2

B r F_{5}

: trigonal bipyramid

3

B r F_{3}

: planar

T -

shaped

4

I C l_{3}

: planar dimeric

Explanation:

The molecular geometry of $B r F_{5}$ is square pyramidal with asymmetric charge distribution on the central atom. 822-s1036

07. The p-BLOCK ELEMENTS (XII)

188676 Which of the following xenon-oxo compounds may not be obtained by hydrolysis of xenon fluorides?

1

X e O_{2} F_{2}

2

X e O F_{4}

3

X e O_{3}

4

X e O_{4}

Explanation:

$X e F_{6} + H_{2} O \overset{p a r t i a l}{\to} X e O F_{4} + 2 H F$
$X e F_{6} + 2 H_{2} O \overset{p a r t i a l}{\to} X e O_{2} F_{2} + 4 H F$
$X e F_{6} + 3 H_{2} O \overset{c o m p u t e}{\to} X e O_{3} + 6 H F$

07. The p-BLOCK ELEMENTS (XII)

189582 On adding water to $B i C l_{3}$ solution in $H C l$ , the compound produced is

1

B i_{2} O_{3}

2

B i (O H)_{3}

3

B i O C l

4

B i O C l_{2}

Explanation:

(c) $B i C l_{3} + H_{2} O \to B i O C l + 2 H C l$

07. The p-BLOCK ELEMENTS (XII)

188674 Choose the incorrect formula out of the four compounds for an element $X$ below

1

X_{2} O_{3}

2

X_{2} C l_{3}

3

X_{2} (S O_{4})_{3}

4

X P O_{4}

Explanation:

$X_{2} O_{3} \Rightarrow X^{3 +} O^{2 -}$
$X_{2} C l_{3} \Rightarrow X^{3 +} C l^{2 -}$
$X_{2} (S O_{4})_{3} \Rightarrow X^{3 +} S O_{4}^{2 -}$
$X P O_{4} \Rightarrow X^{3 +} P O_{4}^{3 -}$
Because $C l^{2 -}$ does not exist. So, $X_{2} C l_{3}$ is incorrect. The correct formula should be $X C l_{3}$ .

07. The p-BLOCK ELEMENTS (XII)

188675 Shapes of certain interhalogen compounds are stated below. Which one of them is not correctly stated?

1

I F_{7}

: pentagonal bipyramid

2

B r F_{5}

: trigonal bipyramid

3

B r F_{3}

: planar

T -

shaped

4

I C l_{3}

: planar dimeric

Explanation:

The molecular geometry of $B r F_{5}$ is square pyramidal with asymmetric charge distribution on the central atom. 822-s1036

07. The p-BLOCK ELEMENTS (XII)

188676 Which of the following xenon-oxo compounds may not be obtained by hydrolysis of xenon fluorides?

1

X e O_{2} F_{2}

2

X e O F_{4}

3

X e O_{3}

4

X e O_{4}

Explanation:

$X e F_{6} + H_{2} O \overset{p a r t i a l}{\to} X e O F_{4} + 2 H F$
$X e F_{6} + 2 H_{2} O \overset{p a r t i a l}{\to} X e O_{2} F_{2} + 4 H F$
$X e F_{6} + 3 H_{2} O \overset{c o m p u t e}{\to} X e O_{3} + 6 H F$