Chemistry, asked by dipakslunkhe0791, 3 months ago

The unit cell of Na is bee and its density is
0.97 g/cm3. What is the radius of a sodium
atom if the
molar mass of ra is 23 g/mol​

Answers

Answered by psatendra
1

Explanation:

Density (D), number of atoms per unit cell (Z), atomic mass (M), Avogadro's number (N

0

) and edge length (a) are related as below:

D=

N

0

a

3

ZM

Given D=8.55 g/cm

3

and M=93 u.

Edge length =a=(

DN

0

ZM

)

1/3

=(

8.55×6.023×10

23

2×93

)

1/3

=3.306×10

−8

cm

Atomic radius =r=

4

3

a=

4

3

×3.306×10

−8

=1.432×10

−8

cm=14.32 nm

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