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प्रश्न
Name the negatively charged particle present in the atoms of all the elements.
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उत्तर
Electron (symbol: e−) is the negatively charged particle present in the atoms of all elements.
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संबंधित प्रश्न
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
What are the observations of the experiment done by Rutherford in order to determine the structure of an atom?
FILL IN THE BLANK
Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
FILL IN THE BLANK
In an atom, the last shell containing electrons is called its..................shell.
Tick the most appropriate answer.
In 1908, R A Millikan found the charge of an electron to be
- 1.6 x 10-19 C
- 1.6 x 10-15 C
- 1.4 x 10-19 C
- 1.6 x 19-16 C.
Tick the most appropriate answer
β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
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
Name the sub-atomic particle whose charge is 0.
State its one drawback of Rutherford’s atomic model.
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
