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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
Fill in the blanks of the following statements :
An atom has atomic mass number 23 and atomic number 11. The atom has_________ electrons.
Cathode rays are a beam of fast moving _________
The maximum number of electrons that can be accommodated in L shell are_________
The maximum number of electrons that can go into the M shell is _________
All the gases from cathode rays and anode rays when electricity is passed through them :What does the formation of cathode rays tell us about the atoms?
Explain the rule according to which electrons are filled in various energy levels.
Write down the electronic configuration of the following:
(a) `""_13^27"Y"`
(b) `""_17^35"Y"`
The electronic configuration of fluoride ion is the same as that of the neon atom. What is the difference between the two?
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]
Cathode rays are made up of
Rutherford’s ‘alpha (α) particles scattering experiment’ resulted in to discovery of
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?
In a television tube, Cathode rays are deflected by magnetic fields.
