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Atomic Structure and Periodicity - SS2 Chemistry Past Questions and Answers - page 1

1

Which of the following subatomic particles has a positive charge?

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A

Proton

 

B

Electron

 

C

Neutron

 

D

None of the above

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2

The atomic number of an element is defined by the number of:

 

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A

Protons

 

B

Electrons

 

C

Neutrons

 

D

Nucleons

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3

Which of the following subatomic particles has a negligible mass?

 

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A

Proton

 

B

Electron

 

C

Neutron

 

D

All of the above

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4

Isotopes of an element have the same number of:

 

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A

Protons

 

B

Electrons

 

C

Neutrons

 

D

Nucleons

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5

The horizontal rows in the periodic table are called:

 

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A

Groups

 

B

Periods

 

C

Families

 

D

Valence shells

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6

Elements in the same group of the periodic table have the same number of:

 

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A

Protons

 

B

Electrons

 

C

Neutrons

 

D

Shells

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7

The noble gases belong to which group in the periodic table?

 

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A

Group 1

 

B

Group 2

 

C

Group 17

 

D

Group 18

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8

The atomic radius generally increases:

 

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A

From left to right across a period

 

B

From top to bottom within a group

 

C

Both A) and B)

 

D

Neither A) nor B)

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9

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1?

 

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A

Potassium (K)

 

B

Calcium (Ca)

 

C

Rubidium (Rb)

 

D

Francium (Fr)

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10

The element with the symbol Fe belongs to which group in the periodic table?

 

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A

Group 1

 

B

Group 8

 

C

Group 9

 

D

Group 11

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Atomic Structure and Periodicity - SS2 Chemistry (Page 1) - EduPadi Classroom