Question

(1) Write the electron-dot structures for sodium, oxygen and
magnesium
?​

Answer 1

Explanation:

Na • => 1 valence electron (1s² 2s² 2p⁶ 3s¹)

••

• O • => 6 valence electrons (1s² 2s² 2p⁴)

••

• Mg • => 2 valence electrons (1s² 2s² 2p⁶ 3s²)

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Answer 2

It's Simple

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So,The representation of elements with valence electrons as dots around the elements is referred to as electron-dot structure for elements.

So,

Each shell can contain only a fixed number of electrons: The first shell can hold up to 2 electrons, the second shell can hold up to 8,the third shell can hold up to 18

Electronic configuration of Sodium (Na)-2,8,1

Electronic configuration of Oxygen (O)-2,6

Electronic configuration of Magnesium (Mg)-2,8,2

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