CHEMICAL BONDING SITES
INTRODUCTION
NOTES
FORMATION OF COMPOUND
IONIC BOND
COVELANT BOND
PROPERTIES OF IONIC AND COVELANT COMPOUNDS
ACTIVITIES
EXERCISES
WORD SEARCH
CROSS WORD
SIMULATION
ABOUT
SURVEY
STABLE ELEMENTS- GROUP 18
Group 18 elements - inert gas.
Helium - 2 electron in the outer-most shell the others - 8 electron in the outer-most shell
2 electron in the outer-most shell - duplet arrangement.
8 electron in the outer-most shell - octet arrangement.
Duplet and octet electron arrangement - the most stable electron arrangement form, non-reactive in chemical reaction.
Cannot a) accept
b) donate and
c) share
electron with another atom.
Exist as monatomic gas only.
CONDITION FOR THE FORMATION OF CHEMICAL BONDS
-T
o achieve stable arrangement, atom will
Donate electron example: sodium
Accept electron example: chlorine
Share electron example: oxygen gas
-
Positive and negative ion are yielded when they are attracted to each other- ionic bonds occurred
_
-
Process of sharing electron- covalent bonds