11) A 'good' children's book is supposed to have pictures and text in the ratio 17:8. In a book I have just looked at, the pictures occupy 272 pages. Approximately how many pages of text should this book have to be deemed a
'good' children's book?

 128 pages are text

Step-by-step explanation:

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.

60 for the first and 130 for the second

step-by-step explanation: