Atomic Structure Test

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Atomic Structure Test - 6

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Question 1
1 / -0

All the mass of the atom resides in the-

A
nucleus

B
molecules

C
ions

D
orbit

Solution

According to the question the correct option will be option ‘A’ because All the mass of the atom resides in the nucleus.
Question 2
1 / -0

Radius of a nucleus is proportional to what-

A
A

B
A^1/3

C
A²

D
2/3

Solution

According to the question the correct option will be option ‘B’ because Radius of a nucleus is proportional to A ^1/3
r=(1.4×10⁻¹⁵)×A ^1/3
Where r is the radius of the nucleus with mass number A.
Here, the unit of radius is meters.
Question 3
1 / -0

The size of the nucleus is approximately:

A
\(10^{-18} \mathrm{m}\)

B
\(10^{-10} \mathrm{m}\)

C
\(10^{-8} \mathrm{m}\)

D
None of these

Solution

The approximate size of nucleus is of the order \(10^{-15} \mathrm{m}\). As there is no option of \(10^{-15} \mathrm{m}\), the correct option is 'D'-none of these.
Question 4
1 / -0

Protons and neutrons are heavier than electrons and reside in the center of the atom, is called ______ .

A
the nucleus

B
the Orbit

C
the orbital’s

D
none of the above

Solution

According to the question the correct option will be option ‘A’ because Protons and neutron are present in the nucleus of the atom residing at the center.
Question 5
1 / -0

What will be the ratio of the radii of the atom to the nucleus is?

A
10⁴:1

B
10⁻⁴:1

C
10²:1

D
10³:1

Solution

According to the question the correct option will be option ‘A’ because The ratio of the radii of the atom to the nucleus is 10⁴:1
The diameter of the nucleus is of the order of 10⁻¹⁴ to 10⁻¹⁶ m. The diameter of the atom lies in the range 0.74×10⁻¹⁰ m to 4.7×10⁻¹⁰ m.
Question 6
1 / -0

Atoms of different elements combine to form

A
compounds

B
elements

C
solution

D
All of the above

Solution

According to the question the correct option will be option ‘A’ because According to Dalton, atoms of different elements combine with one another to form compounds.
Question 7
1 / -0

The radius of an atomic nucleus is of the order of?

A
\(10^{-10} \mathrm{cm}\)

B
\(10^{-13} \mathrm{cm}\)

C
\(10^{-15} \mathrm{cm}\)

D
\(10^{-8} \mathrm{cm}\)

Solution

Radius of a nucleus is in the order of \(10^{-13} \mathrm{cm} .\) The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger-Marsden gold foil experiment.
Question 8
1 / -0

An atom has two main regions are-

A
Planetary electrons and energy levels

B
Nucleus and kernel

C
Principal energy levels and energy sublevels

D
Nucleus and energy levels

Solution

According to the question the correct option will be option ‘D’ because an atom has two main regions, these include nucleus and energy levels. Nucleus contains protons and neutrons. Electrons revolve in circular energy levels.
Question 9
1 / -0

The space between a proton and electron in hydrogen atom is defined as-

A
full of air

B
full of ether

C
full of electromagnetic radiations

D
empty

Solution

According to the question the correct option will be option ‘D’ because Hydrogen atom contains one proton in the nucleus and one electron outside the nucleus.
The space between a proton and electron in hydrogen atom is empty.
Question 10
1 / -0

The density of nucleus is about what times the density of atom?

A
10⁻¹⁴

B
10¹²

C
10⁻⁸

D
10¹⁰

Solution

According to the question the correct option will be option ‘D’ because the density of nucleus is about 10¹⁰times the density of atom. This because the maximum mass of atom is concentrated in nucleus.
Question 11
1 / -0

Nuclides having the same atomic and mass numbers are called:

A
isotones

B
isomers

C
isobars

D
isotopes

Solution

According to the question the correct option will be option ‘B’ because Nuclides having the same atomic and mass numbers are known as Isomers.

An atom that has an unbalanced ratio of neutrons to protons in the nucleus seeks to become more Stable. The unbalanced or unstable atom tries to become more stable by changing the number of neutrons and/or protons in the nucleus.
Question 12
1 / -0

which forms of energy is a measure of the electron stability when it is in bound state with nucleus?

A
Potential energy

B
Kinetic energy

C
Vibration energy

D
Ionization energy

Solution

According to the question the correct option will be option ‘D’ because Ionization Energy. The energy needed to remove one or more electrons from a neutral atom to form a positively charged ion is a physical property that influences the chemical behavior of the atom. So higher the ionization energy, higher is the stability.
Question 13
1 / -0

Nucleus is composed of two kinds of subatomic particles they are-

A
protons and neutrons

B
electrons and neutrons

C
protons and electrons

D
none of the above

Solution

According to the question the correct option will be option ‘A’ because Nucleus is composed of protons and neutrons.
Question 14
1 / -0

Nucleons are present in phosphorous are-

A
15

B
16

C
30

D
31

Solution

According to the question the correct option will be option ‘D’ because Nucleons are composite particles made up of protons and neutrons. The protons and neutrons collectively present in the nucleus of an atom are called nucleons. PP have 15+16=31 nucleons.
Question 15
1 / -0

The nucleus of the atom consists of which of the following?

A
protons and neutrons

B
protons and electrons

C
neutrons and electrons

D
protons, neutrons and electrons

Solution

According to the question the correct option will be option ‘A’ because the nucleus of the atom consists of protons and neutrons. Electrons are present in extra nuclear part.
Note: Protons, electrons and neutrons are subatomic particles.

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Atomic Structure Test - 6

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Atomic Structure Test - 6

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Question 1

nucleus

molecules

ions

orbit

Solution

Question 2

A

A1/3

A2

2/3

Solution

Question 3

\(10^{-18} \mathrm{m}\)

\(10^{-10} \mathrm{m}\)

\(10^{-8} \mathrm{m}\)

None of these

Solution

Question 4

the nucleus

the Orbit

the orbital’s

none of the above

Solution

Question 5

104:1

10−4:1

102:1

103:1

Solution

Question 6

compounds

elements

solution

All of the above

Solution

Question 7

\(10^{-10} \mathrm{cm}\)

\(10^{-13} \mathrm{cm}\)

\(10^{-15} \mathrm{cm}\)

\(10^{-8} \mathrm{cm}\)

Solution

Question 8

Planetary electrons and energy levels

Nucleus and kernel

Principal energy levels and energy sublevels

Nucleus and energy levels

Solution

Question 9

full of air

full of ether

full of electromagnetic radiations

empty

Solution

Question 10

10−14

1012

10−8

1010

Solution

Question 11

isotones

isomers

isobars

isotopes

Solution

Question 12

Potential energy

Kinetic energy

Vibration energy

Ionization energy

Solution

A^1/3

A²

10⁴:1

10⁻⁴:1

10²:1

10³:1

10⁻¹⁴

10¹²

10⁻⁸

10¹⁰