Question

1. give the number of valence electrons in nitrogen (1 point) *

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1. write the formula for sulfur hexafluoride (1 point) *

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1. write the formula for diarsenic trioxide (1 point) *

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1. write the formula for disulfur tetrafluoride (1 point) *

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1. name seo2 (1 point) *

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Explanation:

Question 5

Step1: Recall nitrogen's group

Nitrogen is in Group 15 (or 5A) of the periodic table.

Step2: Determine valence electrons

For main - group elements, the number of valence electrons is equal to the group number. So nitrogen has 5 valence electrons.

Step1: Analyze the prefixes

In "sulfur hexafluoride", "sulfur" (S) is the first element. "Hexa - " means 6, so there are 6 fluorine (F) atoms.

Step2: Write the formula

The formula is $SF_6$.

Step1: Analyze the prefixes

"Di - " means 2 for arsenic (As), and "tri - " means 3 for oxygen (O).

Step2: Write the formula

The formula is $As_2O_3$.

Answer:

5

Question 6