Atomic Numbers and Electron Configurations

Question 1

Use the periodic table to answer the following questions.How many valence electrons does magnesium have?

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2

Question 2

Type in the correct values to correctly represent the valence electron configuration of magnesium: AsB A =

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3

Question 3

B =

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2

Question 4

What is the charge of a magnesium ion? +

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2

Question 5

What is the charge of an oxygen ion? -

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2

Question 6

Use the periodic table to answer the following questions.How many valence electrons does oxygen have?

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6

Question 7

Describe the trends in electron configuration in the periodic table by selecting the terms from the drop-down menus.The number of valence electrons from the left to right across a period.

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increases

Question 8

Type in the correct values to correctly represent the valence electron configuration of oxygen: AsB2pC A =

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2

Question 9

The number of valence electrons from the top to the bottom of a group.

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stays the same

Question 10

B =

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2

Atomic Numbers and Electron Configurations Answers

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