How many electrons flow on passing $0.2$ faraday of electricity?

6 \times 10^{23}

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1.2 \times 10^{23}

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3 \times 10^{24}

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1.2 \times 10^{24}

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Solution

The correct option is B $1.2 \times 10^{23}$
$1$ Faraday is the charge carried by one mole of electrons.

$0.2$ Faraday = $0.2 \times 6.023 \times 10^{23} = 1.2 \times 10^{23}$ moles of electrons.

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Q. How to solve this without a calculator

4.6 \times 10^{24} / 6.022 \times 10^{23} =

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How many electrons flow on passing 0.2 faraday of electricity?

The correct option is B 1.2×10231 Faraday is the charge carried by one mole of electrons. 0.2 Faraday = 0.2×6.023×1023=1.2×1023 moles of electrons.

How many electrons flow on passing $0.2$ faraday of electricity?

The correct option is B $1.2 \times 10^{23}$
$1$ Faraday is the charge carried by one mole of electrons.

$0.2$ Faraday = $0.2 \times 6.023 \times 10^{23} = 1.2 \times 10^{23}$ moles of electrons.