How many valence electrons are in an atom of phosphorus

Asked by admin @ 27/10/2021 in Chemistry viewed by 363 People

1. How many valence electrons are in an atom of phosphorus? (atomic number 15)

a. 2
b. 3
c. 4
d. 5
2. How many electrons does barium have to give up to achive a noble-gas electron configuration?
a. 1
b. 2
c. 3
d. 4
3. Which of the following elements does NOT form an ion with a charge of 1+?
a. fluroine
b. hygrogen
c. potassium
d. sodium

Answered by admin @ 27/10/2021

1. D. 5
2. B. 2
3. A. fluroine
Hope this helps you!!
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