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Crazy boy [7]
3 years ago
15

13. How many valence electrons does an atom

Chemistry
1 answer:
Scilla [17]3 years ago
7 0

Answer:

The answer to your question is: 3

Explanation:

If an atom has 5 electrons, 5 neutrons and 5 protons, it means that the element is Boron. Boron is situated in the third group A, that means that is has 3 elements in its outermost shell.

Also, if we do the electronic configuration:

                                                                         1s² 2s²2p¹

If we count the number of electron in the second level of energy, the result will be:    2 in s and 1 in p  = 3. Those are the valence electrons.

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oksano4ka [1.4K]
Consumers affect the goods and services produced through:

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6 0
3 years ago
when you decrease the distance between two magnets that are repelling, you increase the magnetic force. True or false?
kupik [55]

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3 0
3 years ago
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How many moles are there in 990 grams of sugar, C12H22011? (Sig Figs, do not
Nitella [24]

Answer:

Number of moles = 2.89 mol

Explanation:

Given data:

Number of moles of sugar  = ?

Mass of sugar = 990 g

Solution:

Formula:

Number of moles = mass/molar mass

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Number of moles = 2.89 mol

6 0
3 years ago
Advanced flow measuring devices ? <br> I need info about this topic please
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Answer:

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5 0
2 years ago
In a mixture of carbon dioxide in water ( a soft drink ) the Carbon Dioxide is the solute
Nataly [62]

Answer:

true :)

Explanation:

hope this helps :)

4 0
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