EASY
9th CBSE
IMPORTANT
Earn 100

The protons and neutrons are collectively called . (nucleus / nucleons)

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Important Questions on Structure of the Atom

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 35

The volume of the nucleus of an atom is _____ than the volume of extra-nuclear part of the atom.

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 35
The electronic configuration of sulphur is [Ne] 3s2 3pk(In terms of quantum mechanical model of atom). The numerical value of k is _____.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 36
The charges of proton and electron are of equal magnitude.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 36
Neutron was discovered by Goldstein.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 36
The existence of neutron was first proposed by Rutherford.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 36
The radius of an atom is of the order of 10-8 cm.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 36
Most elements have whole number atomic mass.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 4 - Structure of the Atom>CHECK YOUR PROGRESS>Q 36
The superscript and subscript in the symbol X1123 indicate atomic number and mass number respectively.