Advertisements
Advertisements
प्रश्न
Define: Electron
Advertisements
उत्तर
Electron = e = is subatomic particle revolving around the nucleus of an atom having
unit – ve charge, mass = 1/1840 of 1 hydrogen atom, and the number of electrons = number of protons.
APPEARS IN
संबंधित प्रश्न
Name the gas which produces anode rays consisting of protons in the discharge tube experiment.
Which sub-atomic particle was discovered by Goldstein.
Complete the table given below by identifying P, Q, R and S.
|
Element |
Symbol |
No. of Protons |
No. of neutrons |
No. of Electrons |
|
Sodium |
`""_11^23"NA"` |
11 |
P |
11 |
|
Chlorine |
`""_17^35"CI"` |
Q |
18 |
17 |
|
Uranium |
R |
92 |
146 |
92 |
|
S |
`""_9^19"F"` |
9 |
10 |
9 |
Define: Proton
Explain in brief the experimental proof which led to the discovery of –
Protons
Represent a proton ‘p’ in term of its symbol showing the subscript and superscript value.
Represent a neutron ‘n’ in term of its symbol showing the subscript and superscript value.
Name or state the following.
Two elements having the same number of protons and electrons but a different number of neutrons.
An atom differs from its ion in ______.
What are fluorescent materials?
