EASY

Earn 100

Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.

50% studentsanswered this correctly

Important Questions on Classification of Elements and Periodicity in Properties

MEDIUM

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

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

MEDIUM

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

Which one of the following has largest ionic radius ?

MEDIUM

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

In comparison to boron, beryllium has:

EASY

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

The correct order of ionic size of

N^{3 -}, {Na}^{+}, F^{-}, {Mg}^{2 +}

and

O^{2 -}

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:

MEDIUM

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

The correct order of the ionic radii of

O^{2 -}, N^{3 -}, F^{-}, {Mg}^{2 +}, {Na}^{+}

and

{Al}^{3 +}

is :

MEDIUM

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

The size of the iso-electronic species

C l^{-}

, Ar and

C a^{2 +}

is affected by:

EASY

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

Among the isoelectronic ions

(O^{2 -}, N^{3 -}, {Mg}^{2 +}, {Na}^{+}),

the ions with the least and the highest ionic radius are, respectively

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?

MEDIUM

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

The effective nuclear charge for an electron in

n = 2

shell in a fluorine atom will be, (calculated according to Slater's rules):

MEDIUM

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

Consider the following radioactive decays

I. ${}_{92}U {\overset{- α}{⟶}}_{90} Th$ and

II. $_{90} Th \overset{- α}{⟶} {}_{88}{Ra}$

In which case group of parent and daughter elements remains unchanged.

EASY

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

What is the correct order of atomic radii of the following atoms?

MEDIUM

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

The ionic radii of

O^{2 -}, F^{-}, {Na}^{+}

and

{Mg}^{2 +}

are in the order:

EASY

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

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>Periodic Trends in the Properties of Elements

The correct order of energy of

2 s

-orbitals in

H

Li

Na

and

K

, is

MEDIUM

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

In the elements of the second period of the modern periodic table, the decrease in atomic radius

(pm)

is maximum with respect to

EASY

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

Among the element Li, N, C and Be, one with the largest atomic radius is

MEDIUM

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

The ionic radii

(in Å)

N^{3 -}, O^{2 -}

and

F^{-}

are respectively:

HARD

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

What would be the IUPAC name for the element with the atomic number

120

Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.

Important Questions on Classification of Elements and Periodicity in Properties

Learn and Prepare for any exam you want !