Structure of the Atoms Test

Result

Structure of the Atoms Test - 14

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The mass of an electron is

A
times the mass of a hydrogen atom

B
times the mass of a hydrogen atom

C
times the mass of a hydrogen molecule

D
times the mass of a hydrogen molecule

Solution

The mass of an electron is negligible as compared to that of a proton. It is only times the mass of a proton. A hydrogen atom has only one proton in its nucleus. So, the mass of an electron is times the mass of a hydrogen atom.

The correct answer is B.
Question 2
1 / -0

Use the following information to answer the next question.

The atomic symbol of the compound shown above is

A
Ma

B
Mg

C
Mn

D
Mo

Solution

The atomic symbol of Magnesium, having an atomic number 12 and atomic mass 24.30, is Mg

The correct answer is B.
Question 3
1 / -0

Use the following information to answer the next question.

A titanium atom has 22 protons. The mass number of titanium is 48.

What is titanium?

A
An element

B
A compound

C
A mixture

D
An ion

Solution

Titanium is a d-block element and has an atomic number of 22.

The correct answer is A.
Question 4
1 / -0

Use the following information to answer the next question.

A potassium atom has 19 protons. The mass number of potassium is 39.

How many neutrons are present in an atom of potassium?

A
19

B
20

C
39

D
58

Solution

Number of neutrons = Mass number − Number of protons = 39 − 19 = 20

The correct answer is B.
Question 5
1 / -0

How many neutrons are present in an atom of titanium?

A
22

B
26

C
48

D
70

Solution

Number of neutrons = Mass number − Number of protons = 48 − 22 = 26

The correct answer is B.
Question 6
1 / -0

Which of the following elementary particles can be found within a nucleus?

A
Electrons

B
Protons

C
Photons

D
Muons

Solution

In an atom, protons and neutrons are present within the nucleus, while the electrons revolve around it.

The correct answer is B.
Question 7
1 / -0

Use the following information to answer the next question.

Duke is studying the structures of atoms. He finds four models.

Which is the most modern atomic model?

A
The Bohr model

B
The Rutherford model

C
The Thomson model

D
The Chadwick model

Solution

The Thomson model (Plum Pudding model)of the atomic structure was introduced in 1904 before the discovery of the atomic nucleus.

The Rutherford model of the atomic structure was introduced in 1911.

The Bohr model of the atomic structure was introduced in 1913.

The Chadwick model of the atomic structure was introduced in 1932.

The correct answer is D.
Question 8
1 / -0

The elementary particle that moves around the nucleus in an atom

A
has a single negative charge

B
has a double positive charge

C
has a double negative charge

D
has a single positive charge

Solution

The particle that moves around the nucleus in an atom has a single negative charge and is known as an electron.

Hence, the correct answer is option A.