Which of the following groups of elements are most likely not to show similar properties?

carbon, silicon, and tin

helium, neon, and argon

francium, radium and hassium

manganese, rhenium, and technetium

Type in the correct values to correctly represent the valence electron configuration of oxygen: AsB2pC A = B = C =

The catalyst used in the industrial production of ammonia: Select the correct answer below: A. enables equilibrium to be reached more quickly B. increases the equilibrium constant C. shifts the equilibrium of the reaction to favor the products D.

Will the mass of calcium be less than or great than, or equal to the mass of potassium

Why do scientists use frequencies in the VHF range? a. It is the same frequency of many animal calls b. It can travel long distances c. It doesn't hurt animals d. Most animals don't make sounds in that range

Individual M has longer limbs and muscles than Individual N. Both individuals lift the same amount of weight from the ground to their shoulders an equal number of times.

What does the sun earth and moon have in common

How long does it take for light to travel?

Why alkali metals are found in many common substances but are rarely found in pure form?

In the wave-mechanicalmodel oftheatom, an orbitalis the most probable location of

Which of these is an appropriate instrument to measure mass? balance burette ruler graduated cylinder