Nuclei Test

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Nuclei Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

What percentage of the mass of an atom is concentrated in the nucleus?

A
79.9%

B
99.9%

C
50.9%

D
66.9%
Question 2
1 / -0

in what units is mass measured on the atomic scale?

A
milligram

B
gram

C
atomic mass units (u)

D
Kilogram
Question 3
1 / -0

Atomic mass unit (u), defined as

A
1/10^th of the mass of the carbon (¹²C) atom

B
1/14^th of the mass of the carbon (¹²C) atom

C
1/12^th of the mass of the carbon (¹²C) atom

D
1/12^th of the mass of the carbon (¹²C) atom.
Question 4
1 / -0

A free neutron decays into

A
a proton, a positron and a neutrino

B
a proton, an electron and a neutrino

C
a proton, a positron and a antineutrino

D
a proton, an electron and an antineutrino
Question 5
1 / -0

Relation between atomic number (Z), neutron number (N) and mass number (A) is

A
A = Z + N

B
A= Z - N

C
Z = A + 2N

D
Z = A + N
Question 6
1 / -0

Nuclear species or nuclides are shown by the notation

A
A/Z X where X is the chemical symbol of the species

B
A/N X where X is the chemical symbol of the species

C
N/A X where X is the chemical symbol of the species

D
(N/Z) X where X is the chemical symbol of the species
Question 7
1 / -0

197/79 Au Contains

A
79 protons and 118 neutrons

B
79 protons and 197 neutrons

C
197 protons and 118 neutrons

D
79 neutrons and 118 protons
Question 8
1 / -0

The nuclei of isotopes of a given element contain the same number of

A
neutrinos

B
positrons

C
protons

D
neutrons
Question 9
1 / -0

The nuclei of isotopes of a given element differ from each other in their number of

A
None of the above

B
protons

C
electrons

D
neutrons
Question 10
1 / -0

All nuclides with same mass number A are called

A
isobars

B
isotones

C
isotopes

D
isoclines

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Nuclei Test - 1

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Nuclei Test - 1

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Question 1

79.9%

99.9%

50.9%

66.9%

Question 2

milligram

gram

atomic mass units (u)

Kilogram

Question 3

1/10th of the mass of the carbon (12C) atom

1/14th of the mass of the carbon (12C) atom

1/12th of the mass of the carbon (12C) atom

1/12th of the mass of the carbon (12C) atom.

Question 4

a proton, a positron and a neutrino

a proton, an electron and a neutrino

a proton, a positron and a antineutrino

a proton, an electron and an antineutrino

Question 5

A = Z + N

A= Z - N

Z = A + 2N

Z = A + N

Question 6

A/Z X where X is the chemical symbol of the species

A/N X where X is the chemical symbol of the species

N/A X where X is the chemical symbol of the species

(N/Z) X where X is the chemical symbol of the species

Question 7

79 protons and 118 neutrons

79 protons and 197 neutrons

197 protons and 118 neutrons

79 neutrons and 118 protons

Question 8

neutrinos

positrons

protons

neutrons

Question 9

None of the above

protons

electrons

neutrons

Question 10

isobars

isotones

isotopes

isoclines

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1/10^th of the mass of the carbon (¹²C) atom

1/14^th of the mass of the carbon (¹²C) atom

1/12^th of the mass of the carbon (¹²C) atom

1/12^th of the mass of the carbon (¹²C) atom.