Natalie wrote that 773.15-200.4=3,531. What mistake did she make?

Well her mistake is she didn't subtract correctly

Step-by-step explanation:

Her answer is supoose to be 572.75

She lined the decimals wrong (common mistake)

Step-by-step explanation:

The correct answer is 572.75

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.