Suppose you rotate a rectangle about an axis parallel to its long edge, but not touching any part of the rectangle. What best describes the solid formed? ANSWERS: A cylinder with an opening down the middle, like a roll of paper towels A cylinder, the empty space is filled in by rotation. A cuboid with an open space in the middle, like a box without a bottom This isn't possible.

A cylinder with an opening down the middle, like a roll of paper towels

Step-by-step explanation:

Since the axis of rotation does not touch the cylinder, you end up with a hollow cylinder similar to a pipe.

A cylinder with an opening down the middle, like a roll of paper towels

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it