Which of the following numbers has a square root of 9

3
4.5
18
81

81 has the square root of 9.

Square root of 3= 1.73205080757

Square root of 4= 2.02484567313

Square root of 18= 4.24264068712

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.

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get