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Aleksandr [31]
3 years ago
13

How many electrons are contained in a neutral atom of an element with an atomic number of 19 and an atomic mass of 39.09

Chemistry
1 answer:
Alinara [238K]3 years ago
4 0

Answer:

19. the atomic number is the number of of protons. the number of protons must equal the number of electrons (in an uncharged ion) but if K was in it's ion state- it would have 18 electrons, since it's charge is 1+

Explanation:

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