The metalloid that has three valence electrons is .
2 answers:
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Answer:
Explanation:
Density is found dividing mass by volume. In this case, we treat krypton as a sphere having a volume of . Given:
We obtain density of:
This is not a feasible value for a gas like krypton, its radius is actually not 110 pm.
119.37 g/mol
<h3>Further explanation</h3>Relative atomic mass (Ar) and relative molecular mass / molar mass (M)
the molar mass/molecular mass of a compound : the sum of the relative atomic mass (Ar) of the constituent atoms
M AxBy = (x.Ar A + y. Ar B)
Atomic weight (Ar) of :
- C : 12.0107 g/mol
- H : 1.00784 g/mol
- Cl : 35.453 g/mol
The molar mass of CHCl₃