an isotope of an element has the same number of protons and electrons but a different number of neutrons.
8p, 10e, 8n.
8p tells me i have 8 protons, i look up an element with 8 and the bottom.
-this tells me its oxygen.
-i know for a balanced atom, i need the same amount of electrons as protons.In this case i have 2 extra electrons 2- so my atom an iron it has a change> O-2
-all non metals are negatively charged.
-all metals are postively charged.
A transfer of electrons.
i must make sure i show the electronic structure.
BETWEEN METALS AND NON-METALS.
The sharing of electrons.
-between non-metals and non metals.
-MAGIC NUMBER 8.
-metallic bonding happens between metals and metals
-tight packed structure.
-it forms a crystal lattice.
MALLEABLE-GOOD CONDUCTOR OF HEAT AND ELECTRICITY-AUCTILE-SONOROUS.
The Periodic Table
designed by mendeleev-1869-1911.He designed it in positions rated by there reactions.
NOW IN ORDER OF INCREASING ATOMIC NUMBER.
-an element only has one capotal letter and no number
-a compound contains atoms of different elements together.
-oxidation is loss of electrons&reductions is a gain of elecrons.
-reactions get more violent as you go down the group.
-as you go down rhe group the reactivity decreases.
-THE GROUP PUSHS OUT THE OTHER ELEMENT BECAUSE THEY ARE MORE REACTIVE.
e.g.NaBr-Cl >> because Br is more reactive.
Electrolysis>electricity spltting up.