Atomic Structure Test

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Atomic Structure Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following elements has the maximum atomicity?

A
Phosphorus

B
Sulphur

C
Hydrogen

D
Ozone
Question 2
1 / -0

Which of the following statements is not true with regard to matter?

A
Atom is electrically neutral.

B
Atoms can not exist independently.

C
Atom can be divided into smaller particles.

D
Atoms combine to form molecule.
Question 3
1 / -0

The atomic number of an element is 11 and its mass number is 23. How many neutrons are present in the atom?

A
11

B
12

C
22

D
23

Solution

The number of protons = atomic number (Z) = 11
Atomic mass (A) = Number of protons + Number of neutrons
23 = 11 + number of neutrons
Number of neutrons = 23 - 11 = 12
Question 4
1 / -0

Which of the following statements is true regarding the sub atomic particles of matter?

A
In an atom, number of protons is always equal to the number of electrons.

B
In an atom, number of protons is always equal to the number of neutrons.

C
In an atom, number of protons is always more than the number of neutrons.

D
In an atom, number of neutrons is always more than the number of electrons.
Question 5
1 / -0

Radius of hydrogen atom is of the order of _______ .

A
1 nm

B
1 A°

C
1 cm

D
0.1 A°
Question 6
1 / -0

Which of the following pairs forms an electrically neutral atom?

A
Proton and neutron

B
Proton and electron

C
Neutron and electron

D
Nucleus and electron
Question 7
1 / -0

Atomic number of Cl is 17. How many protons are present in it?

A
34

B
7

C
17

D
0
Question 8
1 / -0

Isotopes of an element differ in the number of

A
protons

B
electrons

C
neutrons

D
nucleons
Question 9
1 / -0

Tritium is the isotope of H with number of neutrons, electrons & protons equal to _____ respectively.

A
0, 1, 1

B
2, 1, 1

C
0, 2, 2

D
1, 1, 2
Question 10
1 / -0

Charge on phosphate ion is

A
+4

B
+3

C
-1

D
-3

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Atomic Structure Test - 2

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Atomic Structure Test - 2

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SHARING IS CARING

Question 1

Phosphorus

Sulphur

Hydrogen

Ozone

Question 2

Atom is electrically neutral.

Atoms can not exist independently.

Atom can be divided into smaller particles.

Atoms combine to form molecule.

Question 3

11

12

22

23

Solution

Question 4

In an atom, number of protons is always equal to the number of electrons.

In an atom, number of protons is always equal to the number of neutrons.

In an atom, number of protons is always more than the number of neutrons.

In an atom, number of neutrons is always more than the number of electrons.

Question 5

1 nm

1 A°

1 cm

0.1 A°

Question 6

Proton and neutron

Proton and electron

Neutron and electron

Nucleus and electron

Question 7

34

7

17

0

Question 8

protons

electrons

neutrons

nucleons

Question 9

0, 1, 1

2, 1, 1

0, 2, 2

1, 1, 2

Question 10

+4

+3

-1

-3

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