Which following examples represent a flat character
1 answer:
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Answer:
278pm
Explanation:;
Given that:
density of Ca = 1.54g/
molar mass of Ca= 40.08 g
We know that in face centered structure, there are four atoms in one unit cell
So, In unit cell, mass of 1 atom = molar mass/ Avogadro's Number
= 40.08/ (6.022*10^23)
= 6.66 * 10^ -23 g/atom
For face centered structured Calcium,
mass of 4 atoms= 6.66 * 10^ -23 * 4
= 2.66* 10^ -22 g
As we know,
Volume = mass/density
= (2.66*10 -22) / 1.54
=
edge length of atom = =
cm
2 edge length of atom= 4 * radius of atom
radius of atom =
Radius of calcium atom= cm= 278pm