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Vikentia [17]
3 years ago
12

Helium only has two valence electrons and is a stable atom. How is this possible when atoms

Chemistry
1 answer:
Andru [333]3 years ago
6 0

Answer:

Explanation:

Helium (He) is similar in that it, too, only has room for two electrons in its only valence shell. Hydrogen and helium have only one electron shell. The first shell has only one s orbital and no p orbital, so it holds only two electrons. Therefore, these elements are most stable when they have two electrons.

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Answer:

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Magnesium fluoride is used in the ceramics and glass industry. What is the mass of 1.72 mol of magnesium fluoride?
lions [1.4K]

Answer:

107g

Explanation:

Magnesium fluoride (MgF₂) has a molecular mass of:

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MgF₂ = 24,305g/mol + 37,996g/mol = 62,301g/mol. That means the mass of 1,72 mol of MgF₂ is:

1,72 mol F₂ × (62,301g / 1mol) = <em>107g</em>

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I hope it helps!

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