Answer : The correct option is, nona-, 9
Explanation :
The naming of binary molecular compound is given by:
(1) The first element or less electronegative element is written first.
(2) The second element or more electronegative element is written then, and a suffix is added with it. The suffix added is '-ide'.
(3) If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on..
(4) The prefixes used as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10.
Hence, the correct option is, nona-, 9
