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denis-greek [22]
3 years ago
15

Which elements have two valence electrons?

Chemistry
1 answer:
lora16 [44]3 years ago
7 0

Answer:

Magnesium

Explanation:

Magnesium is in group 2 of the periodic table. The group in which an element is found in tells us the number of valence eletrons it has.

HOPE THIS HELPED

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What is the pH of a solution with an [H+] = 4.73x10^-7 M
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Answer:

The answer to your question is pH = 6.3

Explanation:

Data

pH = ?

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pH is the measure of the concentration of [H⁺]. pH measures the acidity of the solution. If the value of pH is between 0 and 6.9, the solution is an acid. If the pH is 7.0 the solution is neutral and if the pH is between 7.1 and 14, the solution is an alkali.

Formula

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Substitution

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-Simplification

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-Result

pH = 6.3

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