2) A month of the year is randomly selected.
What is the probability of getting a month
that does NOT begin with the letter A?

5/6

Step-by-step explanation:

The months of the year are: JanuaryFebruaryMarch April May June JulyAugust September OctoberNovember December

There are 12 months

There are 10 months that do not start with A

P (month that does NOT begin with the letter A)

= number of months that do not start with A / total months

=10/12

 =5/6

5/6

Step-by-step explanation:

First, list all the months of the year

January, February, March, April, June, July, August, September, October, November, December

There are 2 months that begin with the letter A : April and August

There are 12 months in the whole year

That leaves 10 (12-2) months that do not begin with the letter A

P(month that does not begin with A) = months that don't begin with A/ total

P(month that does not begin with A) = 10/12

The fraction can be reduced, since both the numerator and denominator can be divided by 2

P(month that does not begin with A) = (10/2) / (12/2)

P(month that does not begin with A) =5/6

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.