Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 19

EASY

9th ICSE

IMPORTANT

Earn 100

Name the following :

Two atoms having the same number of protons and electrons but different number of neutrons.

Important Questions on Atomic Structure and Chemical Bonding

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 19

Name the following:

The shell closest to the nucleus of an atom.

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 20

Why the physical properties of isotopes of the same element are not identical?

HARD

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 20

Give reasons: 'Argon does not react'.

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 20

Give reasons
Why the actual atomic mass is greater than mass number?

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 20

Give reasons:

Why ${}_{17}{Cl}^{35} and {}_{17}{Cl}^{37}$ do not differ in their chemical reactions?

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 21

An element

A

has an atomic number

7

and mass number

14

.

B

has electronic configuration

2, 8, 8

.

C

has

13

electrons,

14

neutrons.

D

has

18

protons and

22

neutrons.

E

has electronic configuration

2, 8, 8, 1

.
State valency of each element.

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 21

An element

A

has an atomic number

7

and mass number

14

.

B

has electronic configuration

2, 8, 8

.

C

has

13

electrons,

14

neutrons.

D

has

18

protons and

22

neutrons.

E

has electronic configuration

2, 8, 8, 1

.
State which one is metal?

EASY

9th ICSE

IMPORTANT

Concise Chemistry Class 9>Chapter 4 - Atomic Structure and Chemical Bonding>EXERCISE 4(C)>Q 21

An element

A

has an atomic number

7

and mass number

14

.

B

has electronic configuration

2, 8, 8

.

C

has

13

electrons,

14

neutrons.

D

has

18

protons and

22

neutrons.

E

has electronic configuration

2, 8, 8, 1

.
Identify which is a non-metal?