What is the area of the trapezoid?
a) 16 square units
b) 24 square units
c) 32 square units
d) 36 square units

24 Square Units

Step-by-step explanation:

The formula for the area of a trapezoid is h*([b1+b2]/2)

If you substitue the numbers, you get 4*([4+8]/2), which simplifies down to 24

i dony know

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.