The scale factor from the original design to the reduced is 1/2 draw the reduced design below

Reduce Design is drawn in the attachment.

Step-by-step explanation:

Given:

The Dimension of original design is given as:

Length of original design = 4 cm

Width of original design = 2 cm

Now we know that reduced design scale factor is half.

So we can say that reduce designed scale factor would be half of the original design.

So the dimension will become;

Length of reduced design =

Width of Reduced design =

Hence Reduce Design is drawn in the attachment.

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.