Question 16 of 33 Which sublevels contain valence electrons in an atom of nitrogen (N)?
The Periodic Table
A. 2s and 2p
B. 2s only
C. 3p only
O D. 2s and 3p

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

What is the percent by mass of magnesium sulfate in mgso4.7h2o

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.