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प्रश्न
Fill in the blank
The outermost shell of an atom is known as............................
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उत्तर
The outermost shell of an atom is known as valence shell.
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संबंधित प्रश्न
Give the following a suitable word/phrase.
The smallest unit of an element which takes part in a chemical reaction.
Mention briefly the salient features of Dalton’s atomic theory (five points)
FILL IN THE BLANK
The γ-rays are............................ radiations, like light.
ANSWER IN DETAIL
Name the three subatomic particles. How are they different from each other ?
Draw the electronic configuration of the following elements clearly stating the number of neutrons and protons in their nucleus.
a. Beryllium b. Silicon
c. Chlorine d. Aluminium
e. Nitrogen
The particle not present in an ordinary hydrogen atom is :
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.
What is meant by the term subatomic particles?
