What is velocity? A. Wavelength x frequency

B. Wavelength + frequency

C. Wavelength - frequency

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. : )

The most efficient way to establish the best possible economizer position is to measure

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon