Which two factors are essential for a molecule to be considered polar? nonpolar bonds and asymmetrical structure, nonpolar bonds and symmetrical structure, polar bonds and symmetrical structure, polar bonds and asymmetrical structure

D. Polar bonds and asymmetrical structure.

Explanation:

To be polar, a molecule must have polar bonds and their bond dipoles must not cancel. That is, the molecule must have an asymmetrical structure.  

For example, water is a bent molecule. The O-H bonds are polar, with their bond dipoles pointing toward the O atom (See Figure 1).

The x-components of the dipoles cancel, but the y-components reinforce each other.

A. and B. Wrong. If the bonds are nonpolar, the molecule is nonpolar.

D. Wrong. If the polar bonds are arranged symmetrically, the molecule is nonpolar.

For example, carbon dioxide is a linear molecule. The C=O bonds are polar, with their bond dipoles pointing towards the O atoms (see Figure 2).

The bond dipoles are equal, but in opposite directions, so they cancel each other.

Carbon dioxide has polar bonds, but it is a nonpolar molecule because of symmetry .

the answer is: they rebelled against saddam hussein’s rule.

kurds opposed saddam rule and wanted independence. kurds in the north and shiites in the south revolt against hussein.

for example, the halabja attack in 1988 conducted against the kurdish people by the iraqi regime under saddam hussein, where between 4000 people are killed and around 9000 are injured.