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MrMuchimi
3 years ago
8

Potassium (K): 1s22s22p63s23p64s1 core electrons and valence electrons

Chemistry
2 answers:
storchak [24]3 years ago
6 0
18 core electrons
and 1 valence electron

Masja [62]3 years ago
5 0

<u>Answer:</u> An atom of potassium contains 18 core electrons and 1 valence electrons.

<u>Explanation:</u>

Core electrons are defined as the electrons which are present in the inner shells of an atom.

Valence electrons are defined as the electrons which are present in the outermost shell of the atom.

For the given electronic configuration of potassium (K): 1s^22s^22p^63s^23p^64s^1

The outermost shell of this configuration is '4s' and rest are considered as inner shells.

Thus, an atom of potassium contains 18 core electrons and 1 valence electrons.

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<em> Carbon:</em>
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<em>Carbon:</em>
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<em>Oxygen:</em>
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b. Since the empirical formula of the given substances are just the same and can be written as CH2O then, the percentages of each element composing them will just be equal. 
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