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Electron Configuration

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Electron Configuration

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1s2 2s2 2p6

Neon

15

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Aluminum

15

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Potassium

15

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Hydrogen

15

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Sodium

15

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Silicon

15

How many valence electrons in 1s2 2s2 2p4

6

20

How many valence electrons in 1s2 2s2 2p6 3s2

2

15

in which row is this element : 1s2 2s2 2p6 3s1

Row 3

15

In which group is this element : 1s2 2s2 2p5

Group 7

20

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Chlorine

15

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Magnesium

15