How many energy levels does the element Es (99) have?  

Red light has a wavelength of 650 nm and yellow light has a wavelength of 600 nm. Which color of visible light has more energy? 

Name the element with eight outer electrons and four energy levels.  

What is the name of the family of elements in Group VIIA/17?  

EXTRA CREDIT: Two elements are viewed through a spectroscope.  Both elements generate a red line at 650 nm.  Element A has 1 x 1022 electrons going through the electron transition to create the red line.  Element B has 1 x 1015 electrons going through the electron transition to create the red line.  Which element (Element A or Element B) will generate a brighter red line?

How many ‘d’ orbitals are possible in a d sublevel?

Which form of electromagnetic radiation has the highest energy?

Refer to the table below which contains information for specific neutral isotopes of unknown Element A and Element X.  Use ONLY  the information in the table to answer the questions. Isotope Protons Neutrons Electrons Atomic Number Mass Number A 26 28   X       16 34 FOR ISOTOPE A: (1)  How many electrons does Isotope A have? (2)  What is the atomic number of Isotope A? (3)  What is the mass number for Isotope A? FOR ISOTOPE X: (1)  How many protons does Isotope X have? (2)  How many neutrons does Isotope X have? (3) How many electrons does Isotope X have?  

Which of the following statements about atomic orbitals is FALSE?

Which form of electromagnetic radiation has the highest frequency?