Group 7a of the periodic table contains the

a. most reactive nonmetals.

b. most reactive metals.

c. least reactive nonmetals.

d. least reactive metals.

Classify ... use the periodic table to classify the elements potassium, bromine a d argon according to how likely their atoms lose electrons to form positive ions

Major species present when dissolved in water ammonium iodide

Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule.

In the chemical equation Zn + 2HCl ZnCl2 + H2, the reactants are A. zinc and hydrochloric acid. B. zinc and hydrogen carbonate. C. zinc chloride and hydrogen. D. zinc chlorate and water.

it is difficult to evaluate the toxicity of substances what factors can vary how harmful a chemical is dose of exposure age and genetic makeup will affect response to a toxin.

How many particles are in 3.55 moles of Aluminum Sulfate

Major geological events that occur when plates shift suddenly and released stored energy: A. Volcanic eruptions B. Earthquakes C. Antarctic plate D. Spreading ridges

How does a salt bridge improve a battery

Hat information is needed to determine the energy of an electron in a many-electron atom?

Write the formulas for the following compounds: (a) copper (l) cyanide, (b) strontium chlorite, (c) perbromic acid, (d) hydroiodic acid, (e) disodium ammonium phosphate, (f) potassium dihydrogen phosphate, (g) iodine heptafluoride, (h)