In the periodic table, the period number indicates
a. the number of valence electrons for elements in that period.
b. the number of dots shown on the lewis dot diagrams for elements in that period.
c. the reactivity levels for elements in that period
d. the number of the outermost energy level for elements in that period

Aaspirin has a density of 1.40 g/cm^3 what is the volume in cubic centimeters of a tablet weighing 320 mg?

Which best describes why nh4+ can form an ionic bond with cl-?

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.