EASY
9th CBSE
IMPORTANT
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The number of protons in the nucleus of an atom is called its . [atomic number / mass number]

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Important Questions on Structure of Atom

EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
The total number of protons and neutrons in the nucleus of an atom is called its _____.
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
An atom has an atomic mass number 23 and atomic number 11. The atom has _____ electrons.
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass number of the atom is _____. 22/ 23
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
If the nucleus of an atom has an atomic number17, mass number37 and there are17electrons outside the nucleus, the number of neutrons in it is _____.
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
Almost all the mass of an atom is concentrated in a small region of space called the _____.
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
Cathode rays are a beam of fast-moving _____. (protons/ electrons)
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
The anode rays obtained from hydrogen gas consist of particles called _____.
EASY
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 4 - Structure of Atom>Very Short Answer Type Questions>Q 27
The maximum number of electrons that can be accommodated in the L shell is_____.