const char *OEGetAtomicSymbol(unsigned int elemno)

Returns the atomic symbol associated with the specified atomic number. This function returns a valid pointer to a NUL-character, \0, if elemno is neither greater than zero nor less than the symbolic constant OEElemNo.MAXELEM. Otherwise, all returned values are NUL-terminated, with the first character uppercase, and the second character either a NUL or lowercase (in which case the third character is always the NUL-terminator).