Subatomic Particles
Trending Questions
Q.
Differentiate between the following.
Electron, Proton, Neutron
Q.
The number of protons and electrons is always same in a neutral atom.
- True
- False
Q.
An atom gets positive charge by gaining electrons.
True
False
Q. Identify the element which has no neutron in its nucleus.
- Hydrogen
- Argon
- Lithium
- Helium
Q.
Why can't atoms exist independently while molecules can exist independently?
Q.
In an atom, the protons remain in the nucleus and are unable to move.
- True
- False
Q. Choose the correct pair of elements based on the same number of electrons present in their outermost shell.
- Hydrogen and beryllium
- Carbon and aluminium
- Boron and magnesium
- Hydrogen and sodium
Q.
A dinegatively charged ion has the same number of protons and neutrons. Its mass number is 32. The number of electrons in the ion is
18
16
14
20
Q.
Why are free electrons names so?
Q.
Protons and neutrons are also called _____.
Q. The number of neutrons present in carbon-14 are _______.
- 12
- 14
- 8
- 6
Q. Match the sub-atomic particles with the nature of charge on them.
- Negative
- Positive
- Neutral
Q. The number of neutrons present in carbon-14 are _______.
- 6
- 14
- 12
- 8
Q. Neutrons are positively charged.
- True
- False
Q.
Five atoms are labelled from A to E
| Atoms | Mass No | Atomic Number |
| A | 40 | 20 |
| B | 19 | 9 |
| C | 7 | 3 |
| D | 16 | 8 |
| E | 14 | 7 |
Predict which are:
(i) Metals
(ii) Non-metals
Q.
What are the atoms made up of?
Q. Who discovered the proton?
- John Dalton
- James Chadwick
- Eugen Goldstein
- J.J. Thomson
