What is the chemical name of the covalent compound sf6? a. monosulfur hexafluoride b. monosulfide hexafluorine c. sulfur hexafluoride d. hexasulfur fluoride

monosulfur hexafluoride

Explanation:

In the given covalent compound, SF₆, there is one sulfur atom and six fluorine atoms.

The cationic part is sulfur (less electro-negative) and anionic part is fluorine (more electro-negative).

So the more electro-negative fluorine will be named as fluoride and the name of sulfur will be the same :sulfur:

as there are six fluorine so the prefix " hexa"

Hence name will be monosulfur hexafluoride

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.