Question

lled bound electrons.
5. The alpha particles used by Rutherford for
bombarding the gold foil :
(a) have a mass of 2 amu charge +4
(b) have a mass of 4 amu and charge +2
(c) have a mass of 4 amu and charge +4
(d) have a mass of 1 amu and charge +1
QUESTIONS
te five main assumptions of Dalton's atomic​

Answer 1

5] b} Have a mass of 4 amu and charge +2.

• According to Dalton's atomic theory matter is made of very tiny particles called atoms.
• Atoms are indivisible.

Note - Drawback made of sub atomic particles- electron, proton and neutron.

• Atoms of same elements are identical.

Note - Drawbacks are isotopes.

• Atoms of different elements differ in chemical properties.

Note - Drawbacks are isobars.

• Atoms are present in constant proportion in a molecule.