Atomic Structures Test

Result

Atomic Structures Test - 1

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 number of electrons in an atom of an element is equal to its

A
Atomic weight

B
Atomic number

C
Equivalent weight

D
Electron affinity

Solution

The number of electrons in an atom is equal to its atomic number i.e. number of protons.
Question 2
1 / -0

The nucleus of the element having atomic number 25 and atomic weight 55 will contain

A
25 protons and 30 neutrons

B
25 neutrons and 30 protons

C
55 protons

D
55 neutrons

Solution

No. of protons = Atomic no. = 25 and no. of neutron = 55 – 25 = 30.
Question 3
1 / -0

If W is atomic weight and N is the atomic number of an element, then

A
Number of e^-1= W - N

B
Number of ₀n¹ = W - N

C
Number of ₁H¹ = W - N

D
Number of ₀n¹ = N

Solution

No. of neutrons = mass number – no. of protons. = W – N.
Question 4
1 / -0

The total number of neutrons in dipositive zinc ions with mass number 70 is

A
34

B
40

C
36

D
38

Solution

₃₀Zn⁷⁰ ,Zn²⁺has No. of Neutrons = 70 – 30 = 40.
Question 5
1 / -0

Which of the following are isoelectronic with one another

A
Na⁺ and Ne

B
K⁺ and O

C
Ne and O

D
Na⁺ and K⁺

Solution

Na⁺and Ne are isoelectronic which contain 10 electrons.
Question 6
1 / -0

The number of electrons in one molecule of CO₂are

A
22

B
44

C
66

D
88

Solution

One molecule of CO₂have 22 electrons.
Question 7
1 / -0

Chlorine atom differs from chloride ion in the number of

A
Proton

B
Neutron

C
Electrons

D
Protons and electrons

Solution

Cl and Cl- differs in number of electrons. Cl has 17e^- while Cl^- has 18e^-.
Question 8
1 / -0

The mass of an atom is constituted mainly by

A
Neutron and neutrino

B
Neutron and electron

C
Neutron and proton

D
Proton and electron

Solution

Mass of an atom is due to nucleus (neutron + proton).
Question 9
1 / -0

The atomic number of an element represents

A
Number of neutrons in the nucleus

B
Number of protons in the nucleus

C
Atomic weight of element

D
Valency of element

Solution

Atomic number is defined as the number of protons in the nucleus.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Atomic Structures Test - 1

Result

Atomic Structures Test - 1

Score

-

Rank

-

SHARING IS CARING

Question 1

Atomic weight

Atomic number

Equivalent weight

Electron affinity

Solution

Question 2

25 protons and 30 neutrons

25 neutrons and 30 protons

55 protons

55 neutrons

Solution

Question 3

Number of e-1 = W - N

Number of 0n1 = W - N

Number of 1H1 = W - N

Number of 0n1 = N

Solution

Question 4

34

40

36

38

Solution

Question 5

Na+ and Ne

K+ and O

Ne and O

Na+ and K+

Solution

Question 6

22

44

66

88

Solution

Question 7

Proton

Neutron

Electrons

Protons and electrons

Solution

Question 8

Neutron and neutrino

Neutron and electron

Neutron and proton

Proton and electron

Solution

Question 9

Number of neutrons in the nucleus

Number of protons in the nucleus

Atomic weight of element

Valency of element

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

Number of e^-1= W - N

Number of ₀n¹ = W - N

Number of ₁H¹ = W - N

Number of ₀n¹ = N

Na⁺ and Ne

K⁺ and O

Na⁺ and K⁺