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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In a period, the element with maximum atomic volume belongs to group

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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>Periodic Trends in the Properties of Elements

The correct order of atomic radii is:

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

The acidic, basic and amphoteric oxides, respectively, are

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

The species

A r, K^{+}

and

C a^{2 +}

contain the same number of electrons. In which order do their radii increase?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

The effective nuclear charge of an element with three valence electrons is

2.60

. What is the atomic number of the element?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

Which among the following oxides is the most basic?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

In general, the property (magnitudes only) that shows an opposite trend in comparison to other properties across a period is :

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

How does the ionisation energy of

1 st

group elements vary ?

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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>Periodic Trends in the Properties of Elements

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

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

Which of the following pairs exhibit a diagonal relationship?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

Identify the element that forms amphoteric oxide:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

Identify the correct statement from the following.

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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>Periodic Trends in the Properties of Elements

The first ionization energy of magnesium is smaller, as compared to that of elements

X

and

Y

, but higher than that of

Z

. The elements

X, Y

and

Z

, respectively, are :

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

Which of the following has highest hydration energy?

HARD

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

B

has a smaller first ionization enthalpy than

B e

. Consider the following statement:
(I) it is easier to remove

2 p

electron than

2 s

electron
(II)

2 p

electron of

B

is more shielded from the nucleus by the inner core of electrons than the

2 s

electrons of

B e

(III)

2 s

electron has more penetration power than

2 p

electron
(IV) atomic radius of

B

is more than

B e

(atomic number

B : 5, B e = 4

)
The correct statements are.

HARD

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

Among the following, the correct order of acidity is:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

The first ionization enthalpies of

Be, B, N

and

O

follow the order

In a period, the element with maximum atomic volume belongs to group

Important Questions on Classification of Elements and Periodicity in Properties

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