Question

If the relative mass of the Helium(He) is taken as 1unit. Then what is that of magnesium.

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Answer 1

Answer:

Magenisum =6

Because Atomi number of Magenisum is 12

So half of the Atomi number = relative mass

$12 \div 2 = 6$

In helium too

Atomi number =2

Half of it

$2 \div 2 = 1$

Hope u understand

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Answer 2

Explanation:

Magenisum =6

Because Atomi number of Magenisum is 12

So half of the Atomi number = relative mass

12 \div 2 = 612÷2=6

In helium too

Atomi number =2

Half of it

2 \div 2 = 12÷2=1

Hope u understand