CH1012
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METALLIC CHARACTER
• Aluminium, for example, is clearly metallic but (like Be) is on the borderline between ionic & covalent in its cmpds.






 
B
Al
Ga
In
Tl
METALS
NON-METALS
METALLOID
Metalloids: solids under ambient conditions.
Most are semi-conductors rather than
conductors and form covalent rather than
ionic compounds with non-metals. eg. silicon