Zach tried to solve an equation step by step. 4

3



4

3



+

2

1



4

5





=z−

2

1



=z−

2

1



+

2

1



=z



Step 1

Step 2



Find Zach's mistake.

its the fourth option

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo

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.

the radius is 2 times the diameter.

step-by-step explanation: