What Is 1s2 2s2 2p6?
What Is 1s2 2s2 2p6? b. 1s2 2s2 2p6 This represents 2 electrons in the s subshell of the first energy level , 2 electrons in the s subshell of the second energy level and 6 electrons in the p subshell of the second energy level. What is the atomic number of 1s2 2s2 2p6?