1. what information does the atomic mass of an element provide?

a. the sum of electrons and protons in atom
b. the difference between the number of protons an electrons
c. the numbers of isotopes
d. the number of protons and neutrons in a item

2.how do scientist determine the number of neutrons in an item?

a. they find the number of protons
b. they add the umber of electrons to protons
c. they divide the atomic mass of two
d. they subtract the atomic number from the atomic mass

3.how many protons are in a element with an atomic number of 8 and a mass number of 18?

a.8
b.18
c.10
d.3

4.two atoms are that are isotopes of one number must have the same number as what?

a. neutrons
b. atomic mass
c. protons
d. all particles

5.the modern periodic table is organized by number?

a. developing
b. decreasing
c. reducing
d. increasing

if all questions are answers correctly i will be giving out a huge prize to that person so they could get pro and receive 500 points

-your friend queen