Match the following : Oxide Nature (a) CO (i) Basic (b) BaO (ii) Neutral (c) Al 2 O 3 (iii) Acidic (d) Cl 2 O 7 (iv) Amphoteric Which of the following is correct option?

(a)-(ii); (b)-(i); (c)-(iv); (d)-(iii)

(a)-(iii); (b)-(iv); (c)-(i); (d)-(ii)

(a)-(iv); (b)-(iii); (c)-(ii); (d)-(i)

(a)-(i); (b)-(ii); (c)-(iii); (d)-(iv)

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Aluminum exists as $+ 3$ state whereas Thallium exists in both $+ 1 a n d + 3$ oxidation state. Reason for this is

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Important Questions on p- Block Elements

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

It is because of the inability of

{ns}^{2}

electrons of the valence shell to participate in bonding that

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

The acidic, basic and amphoteric oxides, respectively, are

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

The five successive ionization enthalpies of an element are

800, 2427, 3658, 35024 32824 kJ {mol}^{- 1}

. The number of valence electrons in the element is:

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Which of the following arrangements is correct regarding the three types of radii for an atom?

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Aluminium is usually found in

+ 3

oxidation state. In contrast, thallium exists in

+ 1

and

+ 3

oxidation states. This is due to:

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Which among the following oxides is the most basic?

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Three elements

X, Y

and

Z

are in the

3^{rd}

period of the periodic table. The oxides of

X, Y

and

Z

, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of

X, Y

and

Z

is:

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Which of the following has highest hydration energy?

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

In the following sets of reactants which two sets best exhibit the amphoteric character of Al₂O₃ . xH₂O ?

\begin{matrix} Set I & {Al}_{2} O_{3} \cdot {xH}_{2} O_{(s)} + {OH}_{(aq)}^{-} \\ Set II & {Al}_{2} O_{3} x \cdot H_{2} O_{(s)} + H_{2} O_{(l)} \\ Set III & {Al}_{2} O_{3} x \cdot H_{2} O_{(s)} + H_{(aq)}^{+} \\ Set IV & {Al}_{2} O_{3} \cdot {xH}_{2} O_{(s)} + {NH}_{3 (aq)} \end{matrix}

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

The option(s) with only amphoteric oxides is(are):

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Covalent bond length of a chlorine molecule is

1.98 \overset{o}{A}

. Covalent radius (in

\overset{o}{A}

) of chlorine atom is _________

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Which of the following statement is incorrect?

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Identify the correct statement from the following.

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Match the following :

Oxide	Nature
(a) $CO$	(i) Basic
(b) $BaO$	(ii) Neutral
(c) ${Al}_{2} O_{3}$	(iii) Acidic
(d) ${Cl}_{2} O_{7}$	(iv) Amphoteric

Which of the following is correct option?

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Be

and

Al

show similarities in properties due to the diagonal relationship except in the property

X

given below. What is

X

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Atomic numbers of Vanadium, Chromium, Nickel and Iron are

23, 24, 28

and

26

respectively. Which one of these is been expected to have the highest second ionization enthalpy?

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Elements which have relatively high ionisation energy and occur as sulphides are

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

Which of the following orders of ionic radii is correctly represented?

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

The incorrect statement among the following is /are

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Chemistry>Inorganic Chemistry>p- Block Elements>General introduction of Group 13 Element

What is inert pair effect?

Aluminum exists as +3 state whereas Thallium exists in both +1 and +3 oxidation state. Reason for this is

Important Questions on p- Block Elements

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Aluminum exists as $+ 3$ state whereas Thallium exists in both $+ 1 a n d + 3$ oxidation state. Reason for this is