atomic structure Flashcards
whats the mass, position and charge of a proton
1 nucleus , positive
whats the mass, position and charge of a neutron
1 nucleus, neutral
whats the mass, position and charge of a electron
1/840, electron shell, negative
what does the first electron shell hold a maximum of
2 electrons then goes 8 so on
whats the formula for relative atomic mass in isotopes
(mass no 1 x abundance) + (mass no 2 x abundance)
divided by the sum of the abundance of isotopes
what is the relative atomic mass
the RAM is a weighted mean of the mass numbers
whats a compound
two or more elements chemically combined
whats a ion
a ion is a charged particle formed when an atom gains or loses electrons
what type of energy is needed to break a ionic bond
substantial
whats a isotope
is an atom which has the SAME number of protons and electrons but different number of neutrons