14.Identify the reason why atoms decrease in size(atomic radius)across a period on the Periodic Table. a. Gravity pulls the electrons in towards the nucleus.
b. Increase in energy levels increases the attraction and thus pulls electron cloud in.
c. Increasing strong positive nuclear charge from the nucleus pulls in the negative electron clouds and increases with the increase in protons and electrons.
d. Electrons lose energy and collapse with an increasing number of electrons and protons.

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.

Connect the whole numbers on the periodic table to indicate what they represent?

Light waves travel than sound waves.