Nuclei Test

Result

Nuclei Test - 3

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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

What is the unit of mass when measured on the atomic scale?

A
Gram

B
Unified atomic mass unit

C
Kilogram

D
Milligram

Solution

The unified atomic mass unit (u) is defined as one twelfth of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.
Question 2
1 / -0

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

A
A = Z + N

B
Z = A + 2N

C
A= Z - N

D
Z = A + N

Solution

mass number (A) = total number of nucleons = number of protons + number of nutrons = atomic number (Z) + neutron number (N).
Question 3
1 / -0

All nuclides with same mass number A are called

A
Isoclines

B
Isotones

C
Isotopes

D
Isobars

Solution

These are the elements having same atomic number but different mass number. They have the same atomic number because the number of protons inside their nuclei remains the same. The difference in their mass number is due to the difference in their number of neutrons.