atomic structrue Flashcards
subatomic particles:
protons, neutrons, electrons
relative mass & charge of a proton
1, +1
relative mass & charge of a neutron
1, 0
relative mass & charge of an electron
1/2000 (or negligible), -1
def mass number
number of protons + neutrons
def atomic number
number of protons
how to find number of neutrons:
mass number minus atomic number
how to find number of electrons:
atomic number (FOR NEUTRAL ATOMS)
- DEF ISOTOPES *
atoms of the same element containing the same number of protons but a diff number of neutrons which leads to a diff in mass
similar chem properties, diff physical properties
why do elements in g0 not take part in bonding
they are NOBLE GASES; they have fully filled valence electrons and have achieved a stable electronic configuration
def monatomic elements
elements that exist as singular atoms
def molecule:
2 or more elements CHEMICALLY bonded together
diatomic atoms:
H elium N itrogen O xygen F luorine Cl chlorine Br omine I odine At astatine
