What is x and y in there simplest form?

Part 1)

Part 2)

Step-by-step explanation:

step 1

Find the value of x

we know that

In the right triangle of the figure

----> adjacent side divided by hypotenuse (CAH)

Remember that

substitute

step 2

Find the value of y

we know that

In the right triangle of the figure

----> opposite side divided by hypotenuse (SOH)

Remember that

substitute

56

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.