The molar mass of I2 : 283.81 g/mol
<h3>Further explanation
</h3>
Given
I2 compound
Required
The molar mass
Solution
Relative atomic mass (Ar) of element : the average atomic mass of its isotopes
Relative molecular weight (M) : The sum of the relative atomic mass of Ar
M AxBy = (x.Ar A + y. Ar B)
So for I2 :
= 2 x Ar I
= 2 x 126.90447 g/mol
= 253.
809 g/mol
= 253.81 g/mol
Answer:
The number of atoms in the outermost shell
Explanation:
For example, the electron shells in the alkali metals contain the following numbers of electrons:
Li: 2, 1
Na: 2, 8, 1
K: 2, 8, 8, 1
They all have one electron in their outermost shell, and they have similar chemical properties.
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