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Softa [21]
3 years ago
10

Which of the following groups have seven valence electrons and are very reactive?

Chemistry
2 answers:
Lorico [155]3 years ago
6 0

Answer:

Column 17 halogens

Explanation:

I took the test and got it correct.

valina [46]3 years ago
4 0

Answer:

Column 17 halogens

Explanation:

To answer the question we need to know the following;

What are valence electrons?

  • Valence electrons are outermost electrons in the outermost energy level of an atom of any element.

What are halogens?

  • Halogens are group 7 elements that have seven valence electrons. They include, chlorine, fluorine, iodine, etc

What is the reactivity of halogens?

  • Halogens are the most reactive non-metals in the periodic table. They react by gaining one electron to attain a stable configuration.
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