Calculate the number of moles of cl atoms in 1.81×10^24 formula units of magnesium chloride, mgcl2.

The number of moles of Chlorine atoms in given formula units of magnesium chloride are 6 moles.

Explanation:

Formula unit is defined as lowest whole number ratio of ions in an ionic compound. It is calculate by multiplying the number of moles by Avogadro's number which is

We are given:

Number of formula units of magnesium chloride =

By applying unitary method, we get:

If number of formula units are present in 1 mole of a compound.

So, number of formula units will be present in of magnesium chloride.

For the given compound magnesium chloride:

As, 1 mole of magnesium chloride contains 1 mole of magnesium atom and 2 atoms of chlorine atoms.

So, 3 moles of magnesium chloride will contain of magnesium atoms and of chlorine atoms.

Hence, the number of moles of Chlorine atoms in given formula units of magnesium chloride are 6 moles.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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