Based on the trend in valence electrons across periods for main-group elements, how many valence electrons does nitrogen (N) have?
A. 2.
B. 5
C. 1
O O
D. 6

5

Explanation:

I know because I answer this question before and it was right

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.