Advertisements
Advertisements
प्रश्न
Give the following a suitable word/phrase.
The smallest unit of an element which takes part in a chemical reaction.
Advertisements
उत्तर
Atom
APPEARS IN
संबंधित प्रश्न
Write true or false for the following statement
The maximum number of electrons in the first shell can be 8.
Give the following a suitable word/phrase.
Protons and neutrons present in the nucleus.
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.
WRITE SHORT ANSWER
Name the isotopes of hydrogen.
Name the negatively charged particle present in the atoms of all the elements.
State whether the following statement is true or false :
The anode rays obtained from all the gases consist of positively charged particles called protons.
Compare an electron and a proton in respect of mass and charge.
Compare a proton and a neutron in respect of mass and charge.
Explain in brief – Goldstein’s experiment which led to the discovery of the proton.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
