Which electron configuration is correct for a boron ion?

(1) 2

(2) 2-3

(3) 2-8

(4) 2-2-1

Doing an Endothermic reaction, what happens to energy in relation to the surroundings? A. released to B. absorbed from C. mixed with

Choose all of the correct statements concerning acids and bases.

An element's atomic number is 86. How many protons would an atom of this element have

An ___is usually a homologous structure that is shared by all organisms in a group~science

What observations can we make that are the result of the rotation of the earth on its axis? (How do we know that the earth is rotating on an axis? What do we see or experience that shows us that the earth is rotating on an axis?)

What are the characteristics of bones?

If 294 grams of FeS2 is allowed ti react with 176 grams of O2 according to the following equation how many grams of Fe2O3 are produced? FeS2 + O2 = Fe2O3 + SO2

Convert 3.57 moles of aluminum to grams

An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?

Why scientist form a hypothesis