Advertisements
Advertisements
प्रश्न
Define the term Valence shell.
Advertisements
उत्तर
The outermost shell of an atom is known as its valence shell.
APPEARS IN
संबंधित प्रश्न
Write true or false for the following statement
The central pad of the atom is called nucleus.
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
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
TRUE \ FALSE
Electrons are present in the nucleus.
WRITE SHORT ANSWER
Describe a discharge tube.
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
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
Which of the following statement is always correct?
State its one drawback of Rutherford’s atomic model.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
