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Question
Is it possible for the atom of an element to have one electron, one proton and no neutron. If so, name the element.
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Solution
Yes, hydrogen has one electron, one proton and no neutron. It is represented as `""_1^1"H"`.
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RELATED QUESTIONS
Which subatomic particle was discovered by : Goldstein ?
Name the subatomic particle whose relative charge is : +1
(a) What are cathode rays? What is the nature of charge on cathode rays?
(b) Explain how, cathode rays are formed from the gas taken in the discharge tube.
(c) What conclusion is obtained from the fact that all the gases from cathode rays?
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 |
Complete the table given below
|
|
No. of protons |
No. of electrons |
No. of Neutrons |
Atomic Number |
Mass number |
| `""_17^35"CI"` |
|
|
|
|
|
| `""_17^37"CI"` |
|
|
|
|
|
Explain the following:
Mass of an atom is concentrated inside the nucleus of the atom.
Define: Electron
Explain in brief the experimental proof which led to the discovery of –
Protons
Represent an electron ‘e’ 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.
