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Ostrovityanka [42]
3 years ago
8

Which group of elements has seven valence electrons?

Chemistry
2 answers:
Marizza181 [45]3 years ago
7 0
The halogen family is the correct answer but you have it listed for both b) and c) so?one of those would be right i believe
goldfiish [28.3K]3 years ago
7 0

The answer is -

Halogens, the elements in the family are fluorine, chlorine, bromine, iodine, and astatine.

They each have 7 valence electrons hence the reason they're the most active non-metals

If this helped please like :')

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How many grams of magnesium nitride is required to produce 25.00 g of magnesium hydroxide?
Lesechka [4]

Answer:

25 grams of Mg(OH)2 will be produced by 14.424 gram of Mg3N2

Explanation:

The balanced equation is

Mg3N2 + 6H2O -> 3Mg(OH)2 + 2NH3

Molecular weight of magnesium nitride = 100.9494 g/mol

Molecular weight of magnesium hydroxide = 58.3197 g/mol

one mole of Mg3N2 produces three moles of 3Mg(OH)2

100.9494 g/mol of  Mg3N2 produces 3* 58.3197 g/mol of Mg(OH)2

1 gram of Mg3N2 produces

\frac{3* 58.3197}{100.9494 } \\1.733grams of Mg(OH)2

Or 1.733 grams of Mg(OH)2 will be produced by 1 gram of Mg3N2

25 grams of Mg(OH)2 will be produced by 14.424 gram of Mg3N2

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0.0685 mL

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