3. A wave has y frequency of 100 Hz and a speed of 50 m/s. What is the wavelength?

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

For the following, determine the type of reaction and then give products.

The grooves or folds of the brain are called