What is the percentage strength of alcohol in a mixture containing 150 ml. of wichbarel (149 alcohol). 200 ml. glycerin, and 500 ml of 50% alcohol?

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

thats how its supposed to be

answeridentity;