When using this method to solve a system of three equations in the variables x, y, and z, you start by eliminating x from the second and third equations. Then
eliminate y from the third equation. The third equation now has a single variable,
z; solve the third equation for z. Then use the value of z to solve the second
equation for y. Finally, use the values of y and z to solve the first equation for X
Elimination method
O Dimensions of Matrix method
ОО
Gaussian elimination method
Substitution method

c

step-by-step explanation:

c

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.