Given mass of electron = 9.1093826 × 10-31 kilograms
We know that 1 kilogram = 1000 grams = 103 grams.
⇒ Mass of electron = 9.1093826 × 10-31 × 103
We know that by properties of exponents, am × an = am + n.
⇒ 9.1093826 × 10-31 × 103
= 9.1093826 × 10-31 + 3
= 9.1093826 × 10-28
∴ Mass of electron in grams = 9.1093826 × 10-28 grams