Causes of Retinal Hemorrhage. In adults, the causes of retinal hemorrhages are quite common and easy to understand. A forceful blow to the head can result in a retinal hemorrhage. Those who have been in an accident, been assaulted or have taken a fall in which they hit their head may experience a retinal hemorrhage.
Carbon monoxide is polar because oxygen is more electronegative than carbon giving oxygen a partila negative charge and carbon a partial positive charge. There is a net dipole moment.n the free carbon monoxide, a net negative charge Î´- remains at the carbon end and the molecule has a small dipole moment of 0.122 D The molecule is therefore asymmetric: oxygen has more electron density than carbon, and is also slightly positively charged compared to carbon being negative.
Determine each atom's electronegativity from the table. You can determine a non polar molecule immediately if the molecules have equal electronegativity. A molecule can also be non polar if the structure of the atoms line up in a way that the outer orbital electrons cancel out electronegativity. Therefore, you need to examine the shape of the molecule. In general, V-shaped and pyramid-shaped molecules are polar. Water is polar because of the differences in the electronegativity between oxygen and hydrogen. Oxygen is highly negative compared to hydrogen.