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The boiling point of phosphorus is greater than nitrogen.

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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

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 acidic, basic and amphoteric oxides, respectively, are

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?

MEDIUM

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

Which among the following structures does not correctly represent the bonding capacities (valancies) of the atoms involved ?

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

MEDIUM

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

The general formula of the compounds formed when group

13

elements (A) reacts with group

16

elements (B) is

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:

MEDIUM

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

The correct order of decreasing acidic nature of oxides

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

The acidic oxide from below is:

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:

EASY

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

The correct decreasing order for metallic character is

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

Given below are the oxides :

${Na}_{2} O, {As}_{2} O_{3}, N_{2} O, NO$ and ${Cl}_{2} O_{7}$ Number of amphoteric oxides is :

EASY

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

Discuss Abnormals behaviour of Nitrogen.

EASY

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

Total number of acidic oxides among

N_{2} O_{3}, {NO}_{2}, N_{2} O, {Cl}_{2} O_{7}, {SO}_{2}, CO, CaO, {Na}_{2} O

and

NO

is _____ .

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.

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

Identify the element that forms amphoteric oxide:

The boiling point of phosphorus is greater than nitrogen.

Important Questions on Classification of Elements and Periodicity in Properties

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