If n = 2, what type of orbitals are possible?

1s, 2s, 2p, 3s, 3p, 3d

Chemistry worksheet - i am not sure what they are asking for exactly?

State the effect on the concentration of the clo- ion when there is a decrease in the concentration of the oh- ion

Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges