Notice on the Periodic Table that 4s comes before the 3d. That is the first place where energy overlap.
Principal energy levels are an atom's major energy levels, ranging in value from 1 to 7. Energy sublevels are contained within principal energy levels, and their number increases as the value of the principal energy level increases.
Each period corresponds to the number of shells (energy levels) contained in the atom.
Each period in the periodic table corresponds to a principal energy level.http://wiki.answers.com/Each_period_in_the_periodic_table_corresponds_to_what#ixzz18t3CP9fk
The answer is B
Transition elements can form bonds by losing electrons from both the outermost and next to the outermost principal energy levels.
Principal energy levels are an atom's major energy levels, ranging in value from 1 to 7. Energy sublevels are contained within principal energy levels, and their number increases as the value of the principal energy level increases.
Principal quantum numbers (n).
only 1
Each period corresponds to the number of shells (energy levels) contained in the atom.
Each period in the periodic table corresponds to a principal energy level.http://wiki.answers.com/Each_period_in_the_periodic_table_corresponds_to_what#ixzz18t3CP9fk
The answer is B
Transition elements can form bonds by losing electrons from both the outermost and next to the outermost principal energy levels.
the principal energy levels of valence electrons increase.
p px py pz
The principal quantum number describes the size of the orbital. Because they have opposite electrical charges, electrons MORE.
The range of the levels is between 0 to n-1. 3 minus 1 equals to 2, so we have 0, 1, 2 as sub levels. They are the same number of sub-levels.
3s: max 2 el'n 3p: max. 6 el'n 3d: max. 10 electrons