I2, etc etc, and a few others) because different elements have different tendencies to attract electrons to them, known as electronegativity.Hopefully your teacher covers all this soon and youll be ahead of everyone :)-Well, aluminum is to the right of the transition metals,......
A polar covalent bond is a covalent bond in which the electron(s) is(are)n't shared evenly between the elements. Non-even sharing (polar bonds) occurs in every covalent compound except for diatomic compounds (two of the same element bonded together ex. O2, Cl2, Br2, N2, I2, etc etc, and a few others) because different elements have different tendencies to attract electrons to them, known as electronegativity.
Hopefully your teacher covers all this soon and you'll be ahead of everyone :)
Well, aluminum is to the right of the transition metals, but it is to the left of the zig-zag line that separates the metals from the nonmetals. There are just a lot more metals than there are nonmetals.
Aluminum does not get a negative charge. It gets a +3 charge.
Covalent bonding involves the sharing of electrons. If the two atoms involved attract electrons equally, the electrons will be equally shared and you get a nonpolar covalent bond. If, however, the atoms are different, one will attract electrons better than the other and the electrons will be closer to the "more electronegative" element. This leads to a polar covalent bond.
Molecules are also categorized as polar and nonpolar, but it's slightly different. If the polar covalent bonds are evenly distributed around the molecule, they can cancel out and give a nonpolar compound, like CH4. If the polar bonds don't balance out, then it's a polar compound.
aluminum is a metalloid so it has properties of both metal and nonmetals.
it is not negatively charged. it carries a +3 charge so it can only bind to nonmetals.
except the case with aluminum oxides with dissolved metal within the oxide itself.
polar covalent means there is a negative and positive part of the molecule like water which Hydrogen is positive and oxygen is negative. Nonpolar covalent means both are negative in the case of chlorate where the chloride is negative and oxygen is also negative
