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)

MEDIUM

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The formation of the oxide ion, $O^{2 -} (g)$ requires first an exothermic and then an endothermic step as shown below :

$O (g) + e^{-} \overset{}{\to} O^{-} (g); Δ H ° = - 142 k J m o l^{- 1}$

$O^{-} (g) + e^{-} \overset{}{\to} O^{2 -} (g); Δ H ° = 844 k J m o l^{- 1}$

This is because

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Important Questions on Classification of Elements and Periodicity in Properties

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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?

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

The acidic, basic and amphoteric oxides, respectively, are

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Covalent bond length of a chlorine molecule is

1.98 \overset{o}{A}

. Covalent radius (in

\overset{o}{A}

) of chlorine atom is _________

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Which of the following indicates the correct variation in eletronegativities?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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:

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Which of the following has highest hydration energy?

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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}

HARD

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

The electronegativities of

N, C, S i

and

P

are in the order -

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

The electronegativity of the given elements increases in the order

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Identify the correct statement from the following.

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Which among the following oxides is the most basic?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Be

and

Al

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

X

given below. What is

X

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

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

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Given that ionization potential and electron gain enthalpy of chlorine are

13 eV

and

4 eV

respectively. The electronegativity of chlorine on Mulliken scale, approximately equals to

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Identify the correct order of electronegativity for

Mg, B, Si

and

S

The formation of the oxide ion, O 2− (g) requires first an exothermic and then an endothermic step as shown below : O(g)+ e − → O − (g); ΔH°=−142 kJ mo l −1 O − (g)+ e − → O 2− (g); ΔH°=844 kJ mo l −1 This is because

Important Questions on Classification of Elements and Periodicity in Properties

Learn and Prepare for any exam you want !

The formation of the oxide ion, $O^{2 -} (g)$ requires first an exothermic and then an endothermic step as shown below :

$O (g) + e^{-} \overset{}{\to} O^{-} (g); Δ H ° = - 142 k J m o l^{- 1}$

$O^{-} (g) + e^{-} \overset{}{\to} O^{2 -} (g); Δ H ° = 844 k J m o l^{- 1}$

This is because