I Need help!! (1) 7 times 8 + 5 to the power of 2) + 5
2) (56-6) + 5+6 to the power of 2)
3) (46 - 42 to the power of 2) + (13-3)
4) (66-6)+2+7 to the power of 2)
5) (10+4 to the power of two) + ( 8 + 4)

pls show work

109 trust me

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

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.