Among the groups of elements listed below which have the same number of electrons in their highest occupied energy levels?

A. Li, B, C, F

B. Na, Mg, Al, S

C. K, Ca, Rb, Sr

D. N, P, As, Sb

What subatomic particle was discovered with the use of a cathode-ray tube

How many particles are in 400 grams of NaCl

How do genetic engineering techniques enable scientist to produce clotting protein? explain

The number of beans in 3.17 pots

Binary ionic compounds are named

Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral holes. What is the formula of this compound?

When you get into a parked car in the summer time, the metal clip is hot and the seat belt fabric is not. What has a higher specific heat, the metal clip or the seat belt fabric? Think about the definition of specific heat.

A laboratory procedure calls for making 600.0mL of a 1.1M KNO3 solution. How much KNO3 in grams is needed?

How do you make good grades?

What will happen to the pressure inside a rigid container of gas if some of the gas is allowed to escape? (Assuming no change in temperature)