_Isotopes & Average Atomic Mass

Question 1

what is the Atomic number, what does it represent?

Answer 1

The atomic number is the biggest written above the element, and it represents the number of protons in the nucleus of an element

Question 2

Mass number

Answer 2

The whole mass of an atom depends on the mass of the nucleus

P + N = Mass number

Question 3

Isotopes

Answer 3

atoms of the same element that have the same number of p+, but different numbers of n0
Overall they are simply different versions of the same element

Question 4

Average Atomic Mass

Answer 4

the average mass of all the isotopes of that element

not whole numbers

Question 5

Isotopic Abundance:

Answer 5

the percentage of an isotope in a representative sample of an element
every single isotope has a different amount of abundance