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Question: The number of electrons which will together weigh one gram is...

The number of electrons which will together weigh one gram is

A

1.098×10271.098 \times 10^{27} electrons

B

9.1096×10319.1096 \times 10^{31} electrons

C

1 electron

D

1×1041 \times 10^{4}electrons

Answer

1.098×10271.098 \times 10^{27} electrons

Explanation

Solution

: Mass of an electron =9.1096×10−31kg= 9.1096 \times 10^{- 31}kg

1 g or 10−3kg=19.1096×10−31×10−310^{- 3}kg = \frac{1}{9.1096 \times 10^{- 31}} \times 10^{- 3}

=1.098×1027= 1.098 \times 10^{27} electrons