Electronegativity values are useful in determining if a bond is to be classified as nonpolar covalent, polar covalent or ionic. Consider the following chemical compounds. Which compound exhibits polar covalent bonds and why? A) NaCl; ionic bond EN = 2.1

B) SO; polar covalent EN = 1

C) CH; non-polar covalent EN = .04

D) H2; polar covalent EN = 0

It would be SO with the negative and positive gamma

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary