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प्रश्न
What is an electron? State its relative mass and charge.
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उत्तर
An electron (e−) is a fundamental subatomic particle with a negative elementary electric charge. Its mass is 1/1840th of that of a hydrogen atom.
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संबंधित प्रश्न
Name the subatomic particle whose relative charge is : –1
The subatomic particle called electron was discovered by :
If an atom contains one electron and one proton, will it carry as a whole is neutral
Choose the correct option
The number of valence electrons in O2- is :
An atom X has three electrons more than the noble gas configuration. What type of ion will it form?
An element A has 1 electron in its first shell. It combines with element B having 7 electrons in its third shell. What type of bond is formed?
Write down the electronic configuration of the following
- 2713X,
- 3517Y.
Write down the number of electrons in X and neutrons in Y and the formula of the compound formed by X and Y.[XY3]
On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole.
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?
When an atom gains an electron it has more electrons and thus it carries a positive charge.
