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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How the acidic strength of hydrides down the group?

Important Questions on Periodic Classification of Elements

EASY

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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

EASY

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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>Periodic Classification of Elements>Periodic Properties and Their Trends

Which among the following oxides is the most basic?

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Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

Identify the correct statement from the following.

HARD

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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

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Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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>Periodic Classification of Elements>Periodic Properties and Their Trends

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>Periodic Classification of Elements>Periodic Properties and Their Trends

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?

MEDIUM

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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

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Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

The acidic, basic and amphoteric oxides, respectively, are

EASY

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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>Periodic Classification of Elements>Periodic Properties and Their Trends

Give a reason for the following.

Ionisation potential increases across a period, from left to right.

MEDIUM

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

Which of the following has highest hydration energy?

EASY

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

Example for strongest reducing agent amongst all the hydrides of group

15

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Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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

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Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

Identify the element that forms amphoteric oxide:

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Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

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>Periodic Classification of Elements>Periodic Properties and Their Trends

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}

EASY

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

The correct order of atomic radii is:

HARD

Chemistry>Inorganic Chemistry>Periodic Classification of Elements>Periodic Properties and Their Trends

Which of the following gradation in the properties is false, as we move from left to right in the periodic table?

How the acidic strength of hydrides down the group?

Important Questions on Periodic Classification of Elements

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How the acidic strength of hydrides down the group?