Question

state three observations by rutherford on his a-particle scattering experiment.
and why does an atom of argon have zero valency?

Answer 1

HEYA FRND HERE IS YOUR ANSWER

OBSERVATION OF RUTHERFORD ARE:-

1) MOST OF THE PARTICLE PASSES STRAIGHT THROUGH GOLD FOIL.

2)SOME OF THE ALPHA PARTICLES DEFLECT BY GOLD FOIL BY SMALL ANGLES .

3) SURPRISINGLY, ONE OUT OF EVERY 12000 APPEARS TO BE REBOUND.

*ARGON HAVE ZERO VALENCY BECAUSE THE OUTER MOST SHELLS OF ARGON IS FULL ....

HOPE IT HELPS YOU AND PLZ MARK AS BRAINLIEST

Answer 2

1/ on passing the alpha particles which pass nearer to the nuclus get reflected by little angle this tell us that atoms consists of a dense positive charged particles at centre.

1/ the alpha particles which have directly get along the perpindicular the nucleus are totaly get reflected.

3/ the most of the particles does not get reflected this tell us that most of the atoms are empty.

THE ARGON IS A NOBLE GAS SO ITS DOES NOT PARTICIPATE IN CHEMICAL REACTION THAT IS VALENCY.

BECAUSE ALL SHELL ARE FULL.

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