Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 11

MEDIUM

10th CBSE

IMPORTANT

Earn 100

Answer the following giving reasons:
Which element is more metallic, Sodium or Chlorine?

Important Questions on Periodic Classification of Elements

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 12

The electronic configuration of three elements

A, B

and

C

are

2; 2, 6

and

2, 8, 2

respectively. Which element belongs to second period?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 12

The electronic configuration of three elements

A, B

and

C

are

2; 2, 6

and

2, 8, 2

respectively. Which element belongs to eighteenth group?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 12

The electronic configuration of three elements $A, B$ and $C$ are $2; 2, 6$ and $2, 8, 2$ respectively. Which element belongs to the second group?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 13

Sodium (

Z = 11

) and aluminium (

Z = 13

) are separated by one element in the modern periodic table and have valencies

1

and

3

respectively. Explain the differences.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 13

Potassium

(Z = 19)

and chlorine

(Z = 17)

are separated by one element in the modern periodic table and yet both have same valency of

1

. Explain the differences.

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 14

What are halogens?

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 14

Why are group

17

elements called as halogens?

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 14

To which group do halogens belong to?