Advertisements
Advertisements
Question
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
Advertisements
Solution
The fundamental particles of the atom are: electrons, protons and neutrons.
| Particle | Symbol | Charge |
| electron | e– | -1 or 1.602 x 10-19 C. Where -1 represent its one unit negative electrical charge |
| proton | p+ | + 1 or 1.602 x 10-19 C. Where +1 represents one unit +ve electrical charge. |
| neutron | no | 0 |
APPEARS IN
RELATED QUESTIONS
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Write true or false for the following statement
The maximum number of electrons in the first shell can be 8.
Define the term Atomic number.
Mention briefly the salient features of Dalton’s atomic theory (five points)
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.
WRITE SHORT ANSWER
What is an atom?
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
Which of the following statement is always correct?
Explain in brief – Goldstein’s experiment which led to the discovery of the proton.
