science
Grade-9
Easy
Question
How many numbers of valence electrons are there in potassium ion?
- 8
- 1
- 2
- 3
Hint:
The number of the valence electrons in potassium is 1.
The correct answer is: 8
- The atomic number of potassium is 19 and its electronic configuration is 2,8,8,1
- The outermost shell is the valence shell and the electrons in the outermost shell are valenced electrons
- As potassium has 1 electron in the valence shell, the number of valence electrons is 1.
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