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Citrus2011 [14]
3 years ago
12

Atoms of the most reactive elements tend to have

Chemistry
2 answers:
kaheart [24]3 years ago
4 0
One or seven valance electons
Zolol [24]3 years ago
3 0

Answer choices:

A. one or seven valence electrons

B. eight valence electrons

C. four or five valence electrons

D. no valence electrons.

The answer is most likely A. one or seven valence electrons

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Which of the following is the correct formula for Ca2+ reacting with NO2??
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Answer:

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Explanation:

Ions (charged atoms) combine with one another to form stable ionic compounds. In this case, calicium ion (Ca2+) is said to react with NO2, which has a charge of -1 i.e. +1-1(2) = 1-2 = -1.

This means that calcium has a charge of +2 while nitrite ion has charge of -1, hence, when they combine, they exchange their charges, which become their subscript as follows:

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