GCSEs Atomic Structure A Ionsn Flashcards
What is a group number?
The number of electrons on the outer shell
What is a period number?
Number of shells with electrons on them
What is atomic number?
(the smaller number) the number of protons in an atom= the number of electrons in an atom
What is mass number?
(bigger number) number of neutrons + number of protons
What is an isotope?
Atoms with the same atomic number but different mass numbers
What is relative atomic mass?
The weighted average mass of the isotopes of that element
What is the charge of atoms in group 1
+
What is the charge of atoms in group 2?
2+
What is the charge of atoms in group 3?
3+
What is the charge of atoms in group 5?
-3
What is the charge of atoms in group 6?
-2
What is the charge of atoms in group 7?
-1
Formulae of Hydrogen
H+
Formulae of silver
Ag+
Formulae of ammonium
NH4+
Formulae of iron 11
Fe2+
Formulae of copper 11
Cu2+
Formulae of lead
Pb2+
Zinc
Zn2+
Formulae of iron 111
Fe 3+
Formulae of hydroxide
OH-
Formulae of nitrate
NO3 -
Formulae of carbonate
CO3 2-
Formulae of sulfate
SO4 2-