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प्रश्न
Define the term Valence shell.
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उत्तर
The outermost shell of an atom is known as its valence shell.
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संबंधित प्रश्न
Write true or false for the following statement
The central pad of the atom is called nucleus.
FILL IN THE BLANK
In an atom, the last shell containing electrons is called its..................shell.
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
WRITE SHORT ANSWER
What is the charge on a neutron ?
ANSWER IN DETAIL
What is the maximum number of electrons that L shell can accommodate ? Give reasons for your answer.
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
Compare an electron and a proton in respect of mass and charge.
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
Select the correct answer from the choice in the bracket to complete the sentence:
A ________ is a sub-atomic particle with no charge and unit mass.
