Choose the correct graph for 2x - y = 4.

There is no graph that you have attached. However, I can still help:

Look at all the options. The one that starts off at negative 4 and moves up by 2 units per one horizontal unit positively should be the correct one.  

How I figured it out:

y = mx + b

y - b = mx

-b = mx - y

4 = 2x - y

m = slope

b = starting point/intercept

Hope this helps!! :)

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.