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28 Nov 2020
Consider potassium (K) which has an atomic number of 19 and an atomic mass of 39. How many outer or valence electrons exist in this atom?
a. 39
b. 19
c. 17
d. 9
e. 1
Consider potassium (K) which has an atomic number of 19 and an atomic mass of 39. How many outer or valence electrons exist in this atom?
a. 39
b. 19
c. 17
d. 9
e. 1
23 Aug 2021
Christian TusoLv10
16 Jan 2021
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