A glass studio has designed a paperweight that consists of two cubes that are stacked on top of each other so that one entire face of the smaller cube is resting on the larger cube. The side lengths of the larger and smaller cubes are 3 in. and 1 in., respectively. What is the surface area of the paperweight?

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step-by-step explanation:

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.