TheKoolKid1O1 TheKoolKid1O1

22-06-2019
Chemistry

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Fluorine has nine protons and nine electrons. It is in column 17 on the periodic table. How many valence electrons does hydrogen have? 2 5 7 9

Respuesta :

23-06-2019

Answer:

Hydrogen has one electron

Explanation:

Hydrogen is the first element in the Periodic Table, so it has only one valence electron.

For elements in Groups 13 to 18, then number of valence electrons equals the Group number – 10.

Fluorine is in Group 17, so it has seven valence electrons.

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Аноним Аноним

14-05-2020

Answer:

7 i just did the test and got it right

Explanation:

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