Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 14

MEDIUM

11th CBSE

IMPORTANT

Earn 100

Valence electrons in the element $A$ are $3$ and that in element $B$ are $6$ . Most probable compound formed from $A$ and $B$ is

50% studentsanswered this correctly

Important Questions on Classification of Elements and Periodicity in Properties

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 15

A, B

and

C

are elements in the third short period, oxide of

A

is ionic, that of

B

is amphoteric and that of

C

is a giant molecule.

A, B

and

C

will have atomic numbers in the order

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 1

s

and

p

-Block elements are collectively called _____ elements

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 2

The general outer shell electronic configuration of _____

(d / s)

-block elements is

(n - 1) d^{1 - 10} {ns}^{1 - 2}

.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 3

All the lanthanoid and actinoids belong to Group _____ (

3 / 4 / 5

) of the periodic table.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 6

Elements having three incomplete outermost subshells are called _____

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 11

In the periodic table, the element having the highest first ionisation enthalpy is _____.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 12

Energy released when an electron is added to a neutral gaseous atom is called _____ enthalpy of the atom.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>TEST YOUR GRIP>Q 13

Among the halogens, the element having the most negative electron gain enthalpy is _____.