in a polar molecule (for example H-Br) how do you indicate the direction of the resulting dipole?
i know the answer is either --> or <-- but idk HOW to get it, how do u know it points to the right? or the left?
please, and thank you a lot!
2006-11-21 09:53:46 · 2 answers · asked by Curious10106 2 in Science & Mathematics ➔ Chemistry
Do you have a chart indicating the electronegativities of atoms?
The more electronegative atom will be at the point of the arrow.
H has an EN value of 2.1 and Br has an EN value of 2.8.
So, in this case, the point of the dipole arrow points to Br.
2006-11-21 09:56:56 · answer #1 · answered by nazzyonenine 3 · 0⤊ 0⤋
Look on the periodic chart. Remember that electronegativity increses as you go from left to right, and decreases from top to bottom. However, careful consideration must be paid to where an atom is in relation to the other atom in the formula. if it is farther to the right than it is below, the arrow point to this one.
Hope this helps you...Good luck.
P.S. In HBr, The > point toward Br, because Br it is farther to the right than it is below H.
2006-11-21 18:00:55 · answer #2 · answered by chemguy 1 · 0⤊ 0⤋