Question

if an atom has a charge of -2 C,then how many number of excess electron it must have?​

Answer 1

Answer:

Q = ne where Q is the charge and ne states the number of electrons. This is quantanisation of charge.

One electron = 1.6 × 10^-19 .

This implies that one charge = 6.25 × 10^18 electrons.

Therefore 2 coulombs of charge has 12.5 x X 10^18 = 1.25 × 10^19 electrons.

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Answer 2

Answer:

Q = ne where Q is the charge and ne states the number of electrons. This is quantanisation of charge.

One electron = 1.6 × 10^-19 .

This implies that one charge = 6.25 × 10^18 electrons.

Therefore 2 coulombs of charge has 12.5 x X 10^18 = 1.25 × 10^19 electrons.

Please mark my answer as brainliest.