Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_28 ( decay_mode VARCHAR, discovery_year VARCHAR, isotope VARCHAR )

### Question ###
What is the decay mode of the 265m hs isotope discovered in 1984?

### Accurate SQL ###

SELECT decay_mode FROM table_name_28 WHERE discovery_year = "1984" AND isotope = "265m hs"