Question # 1

Which of the following elements is most electronegative?

Choose an answer

Oxygen

Chlorine

Nitrogen

Fluorine

The elements of sub-group A are called

Choose an answer

Transition elements

Main elements

Typical elements

Rare earth elements

Which is the most volatile compound

Choose an answer

Hl

HCl

HBr

HF

The energy absorbed when an electron is added to a gaseous atom to form a gaseous ion is called

Choose an answer

Electron affinity

Ionization energy

Both of these

None of these

The structure of complex hydrides is

Choose an answer

Tetrahedal

Trigonal

Octahedral

Square planar

Mark the correct statement

Choose an answer

Na⁺is smaller than Na atom

Na⁺is larger than Na atom

Cl^-is the smaller than Cl atom

Cl^-(ion) and Cl (atom) are equal in size

Which has highest 1st I.E.

Choose an answer

Br

Cl

F

l

Which of the following is a member of -block

Choose an answer

Zn

Al

B

Br

According to the periodic law, the chemical properties of the elements are periodic functions of their

Choose an answer

Density

Atomic number

Atomic mass

Mass number

Transition elements have valence electrons in

Choose an answer

s-orbital

p-orbital

d-orbital

f-orbital

Which of the following pair of atomic numbers represents s-block elements?

Choose an answer

7, 15

6, 12

9, 17

3, 20

Which of the following ion has the highest value of ionic radius?

Choose an answer

Li⁺

F^-

O^2-

B³⁺

The element with atomic number 26 will be found in group

Choose an answer

2

8

6

10

Two elements whose electronegativities are 1.2 and 3.0, the formed between them would be

Choose an answer

Ionic

Covalent

Coordinate

Metallic

Alkali metals in each period have

Choose an answer

Smallest size

Lowest IE

Highest IE

Highest electronegativity

The number of groups in the periodic table is

Choose an answer

6

7

8

9

A pair of elements in the same family in the periodic classification is

Choose an answer

Cl and C

Ca and Al

N and Ne

Na and K

The elements of group lA are called

Choose an answer

Chalocogens

Halogens

Alkali metals

Alkaline earth metals

Doberiner arranged the similar elements into

Choose an answer

Pairs

Triads

Triplets

Rows

Among the following elements which one has the highest value of first ionization potential?

Choose an answer

Oxygen

Argon

Barium

Cesium

The element with atomic number 55 belongs to which block of the periodic table

Choose an answer

s-block

p-block

d-block

f-block

The valence shell of hydrogen is half filled like those of

Choose an answer

IV - A

VIA

V - A

VIIA

NaH is

Choose an answer

Ionic hydride

Complex hydride

Covalent hydride

Interstitial hydride

All the elements belongs to the 2nd period are

Choose an answer

Normal elements

Transition elements

Stable elements

Halogens

Gradation in properties in the periods of periodic tables are due to change in

Choose an answer

Atomic weight

The number of electrons

Number of protons

Electronic configuration

The classify the elements, Newland gave the idea of

Choose an answer

Octaves

Triads

Atomic volume

Atomic mass

The number of elements in the first, second and third period are

Choose an answer

2, 8, 18

8, 2, 18

2, 18, 8

2, 8, 8

What is the nature of SO₂

Choose an answer

Basic

Strongly acidic

Weakly acidic

Amphoteric

Which of the following does not reflect the periodicity of elements?

Choose an answer

Bonding behaviour

Electronegativity

Ionisation potential

Neutral/proton ratio

For the representative elements from left to right across a period in the periodic table, the electron effinity of the atom generally

Choose an answer

Increases

Remains constant

Decreases

Not clear

The positive ion is always smaller than the neutral atom while the negative ion is always bigger than the neutral atom. The atomic and ionic radii of Na, F, Na⁺, F^-are in ppm

Choose an answer

Na F Na⁺ F^-

157 72 95 136

Na F Na⁺ F^-

157 95 172 136

Na F Na⁺ F^-

72 95 136 157

Na F Na⁺ F^-

157 136 95 72

More Classes

Other Links

ECAT Chemistry Chapter 12 Periodic Classification of Elements and Periodicity Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer