Advertisements
Advertisements
प्रश्न
State the location of electrons, protons and neutrons in an atom.
Advertisements
उत्तर
In an atom, the position of subatomic particles is as follows:
Protons: They are positively charged particles present at the centre of the nucleus of an atom.
Neutrons: They are neutral subatomic particles also present in the nucleus of an atom.
Electrons: They are negatively charged particles which revolve in particular orbits around the nucleus of an atom.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Define the term Atomic number.
Mention briefly the salient features of Dalton’s atomic theory (five points)
FILL IN THE BLANK
The electrons revolving in shells close to the nucleus are called ................... electrons.
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.
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
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.
Compare an electron and a proton in respect of mass and charge.
Compare a proton and a neutron in respect of mass and charge.
