Can you answer this question

D. complementary

Step-by-step explanation:

If <1 and <4 combine, they cannot be supplementary because the 2 angles don't add up to 180*

<1 and <4 do not locate in the opposite parallel side -> not vertical

<1 and <4 do not locate next to each other -> not adjacent  

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.