Chapter 2 Flashcards
(21 cards)
What two subatomic particles make up a nucleus
Protons and neutrons
What is the relative mass of a proton
1
What is the relative mass of a neutron
1
What is the relative mass of an electron
1/1836
What is the electron to proton ratio in an atom
Each atom has the same amount of protons as electrons
What are isotopes
Isotopes are atoms of the same element with different numbers of neutrons and different masses
Mass number
The number of neutrons present in the atom
Atomic number
The number of protons present in the nucleus which is equal to the number of electrons
What is a positive ion
A cation is an atom with fewer electrons than protons
What is a negative ion
Anions are atoms with more electrons than protons
Relative isotopic mass
The mass of an isotope relative to 1/12th of the mass of an atom of carbon-12
Relative atomic mass
The weighted mean mass of an atom of an element relative to 1/12th of the mass of an atom of carbon-12
Mass to charge ratio
M/z=relative mass of ion/relative charge of ion
Relative atomic mass formula
RAM=(abundance x mass number)/100
What is the charge of group 1 ions
1+
What is the charge of group 2 ions
2+
Group 5 non-metal charge
3-
Group 6 non-metals charge
2-
Group 7 non-metal charge
1-
Why do group 8 have no ions
They all have full outer shells so won’t want to lose any electrons or gain any
What ionic charges to transition metals have
The charge of the transition metals depends on the other atom they are reacting with
