What is the number of valence electrons in the outermost energy level of an element in goup 15a?

Why does nitrogen have 5 valence electrons?

Why do the words "Shake well before using" indicate that the fruit juice in a carton is a suspension? What are these words not used on a milk container?

hich quantity describes how spread out a set of data is? O A. Standard deviation O B. Percent error O C. Line of best fit D. Mean

3. Determine the acid-base pairs in the example below CHOOH (aq) + H2O (l) ↔ HCOO - (aq) + H3O (aq) H2S (aq) + NH3 (aq) ↔ NH4 + (aq) + HS - (aq)

What happens if you cross a heterozygous organism with a heterozygous organism?

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?