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प्रश्न
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
उत्तर
This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
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संबंधित प्रश्न
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
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.
TRUE \ FALSE
Electrons are present in the nucleus.
WRITE SHORT ANSWER
What is the charge on a neutron ?
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
Why is an atom neutral inspite of the presence of charged particles in it?
The particle not present in an ordinary hydrogen atom is :
Name the sub-atomic particle whose charge is 0.
What is meant by the term subatomic particles?
