S1U1B3S1H4E1L1L1S1
14 points
SUBSHELLS is validvalid
SUBSHELL, one of the orbitals making up an electron shell of an atom [n]
SUBSHELL, one of the orbitals making up an electron shell of an atom [n]
SUBSHELL, one of the orbitals making up an electron shell of an atom [n]
SUBSHELL, one of the orbitals making up an electron shell of an atom [n]