Why are fluorine (F), chlorine (Cl), and iodine (I) in the same group of the periodic table? A.
They have similar atomic masses.

B.
They have similar physical properties.

C.
They have similar boiling and melting points.

D.
They have similar reactions with other elements.

What is the density of the black hole

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form