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10 Mga Komento
A look at boron trifluoride and sulphur(VI) oxide as examples of trigonal planar molecules.
A look at ammonia and phosphine as examples of trigonal pyramidal molecules.
A look at methane and silane as examples of tetrahedral molecules.
A look at water and sulphur(IV) oxide as examples of angular molecules.
A look at carbon(IV) oxide, nitrogen and some other linear molecules.
Learn the composition of some alloy and their uses.
A look at the natural occurrence and method of extracting sodium copper.
In this lesson, you will learn about the uses, physical and chemical properties of copper.
A look at some compounds in which copper can be found in its combined state.
A look at the natural occurrence and method of extracting iron.