Metals can conduct electricity and have high melting points, while non-metals exist in solid, liquid, and gas phases with low melting points. Compounds formed between metals and non-metals are ionic, with the metal transferring electrons to the non-metal. Compounds formed between non-metals or metals and metalloids are covalent, with shared pairs of electrons. Bond length and bond energy are also influenced by the types of elements involved in a chemical bond.

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CHEMICAL BONDING (IKATAN KIMIA)
Element: Metal, Metalloid, non-Metal
State the difference in term of:
Metal Metalloid Non-Metal
Electrical conductivity Conductor Isolator
Melting point Tinggi Rendah
Appearance Mengkilat Kusam
Malleability/ductility
Solid/liquid/gas Solid Solid Solid, Liquid, Gas
Charge ion
Example
Ionic or covalent?
Rule: Metal + non-Metal  ionic compound
non-Metal + non-Metal (or metalloid)  covalent compound (also called molecular compound)
a. Ionik : kation + anion : nama kation (bil. Oksidasi) + nama anion
b.
f. tetrafosfor hexaoxida
a. Vanadium III nirat
e. germanium tetrabromida
g. besi (II) hidroksida
h. diiodin tetraoksida

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BondLengthand Bond Energy