Part A Shandra is on vacation and wants to buy souvenirs for at least eight friends.
A postcard book costs $2.50 and a magnet costs $4.00. She can spend up to $30 all together.
Which system of inequalities represents the situation?

equal to

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.

this "question" looks more like a project is there any other info you can give me about this. it could be too complex for someone else to do on this website