When a potassium atom forms an ion, it loses one electron. What is the electrical charge of the potassium ion?

A.

-2

B.

-1

C.

+2

D.

+1

The solubility of an ionic compound in water at 25°C is 5.0 g/L. List all of the possible methods one might use to make more than 5.0 grams of this compound dissolve in one liter of water.

Compound for Fe2+andO2-

Of the bonds C-N, C=N, and C- = N (triple bond), the C-N bondis a) strongest / shortest b) Strongest / longest c) weakest / shortest d) intermediate in both strngth and length e) weakest / longest

Example of the double inclined plane

If an atom contains 1 electron and 1 proton will it carry any charge or not?

Read the list of elements given below. He, Ne, Ar, Kr Which of the following about the elements is true? All of them are unreactive gases. All of them are reactive metalloids. He and Ne are unreactive gases and Ar and Kr reactive metalloids.

Blank is the energy required for a chemical reaction to take place, and blank is the energy associated with every substance.

When a group 7 element reacts with a group 1 element, what is the effect on the group 1 atom

Which term best indicates the average mass of an atom of an element? atomic number mass number group number atomic mass

How many protons and electrons in Arsenic ion