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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 _________
How does an electron differ from a neutron?
Explain the rule according to which electrons are filled in various energy levels.
What are inert elements?
Element X has electronic configurations 2, 8, 18, 8, 1. Without identifying X,
- Predict the sign and charge on a simple ion of X.
- Write if X will be an oxidizing agent or a reducing agent. Why?
If electrons are getting added to en element Y; then
Is Y getting oxidized or reduced?
Choose the correct answer from A, B, C and D:
When a metal atom becomes an ion:
What is the term defined below?
A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
When an atom gains an electron it has more electrons and thus it carries a positive charge.
Assertion: Helium has four electrons in the outermost orbit.
Reason: Neon has eight electrons in the outermost orbit.
