What is the broadest taxon in the modern classification system?
a Phylum
b Order
C Kingdom
D domain?

Which other elements contain the same number of outer electrons as sodium

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?