The elements that do not ordinarily form compounds are
a. elements in the carbon family.
b. metals.
c. halogens.
d. noble gases.

What does x represent in the formula for the compound xcl4?

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?