Isotopes & Ions Flashcards
1
Q
what are isotopes?
A
atoms of the same element that differ in the number of neutrons in the nucleus
2
Q
what do isotopes have different?
A
mass number
3
Q
what is Relative Atomic Mass?
A
weighted average to calculate the Relative atomic mass of an element
4
Q
what is the short form Relative Atomic Mass?
A
RAM
5
Q
what is the formula to calculate the RAM?
A
(% of isotope 1 x mass number of isotope 1) + (% of isotope 2 x mass number of isotope 2) / 100
6
Q
what should you do if you are given only % of isotope
A
you minus the given isotope % by 100 (100 - %)
7
Q
how to find the stable isotope?
A
look at the periodic table and the elements mass number
8
Q
what are cations?
A
positive ions
9
Q
what are anions?
A
negative ions
10
Q
what is valency?
A
charge of an ion
