does the former element also have isotopes?
Yes, it  has seven naturally occurring isotopes, six of which are stable and undergoes alpha decay
Osmium
Osmium has seven naturally occurring isotopes, six of which are stable: , , , , , and (most abundant) . undergoes alpha decay with such a long half-life years, approximately times the age of the universe, that for practical purposes it can be considered stable. 
the density of osmium which is the densest metal It is approximately twice as dense as lead and slightly denser than iridium. what is osmium? It is a chemical element with the symbol Os and atomic number 76. where did it get its name from? From Greek word  "osme" meaning "smell". who was the first one to discover numbers for atoms? Henry Moseley are there elements that are also missing? There were seven elements  which were not found and therefore identified as still undiscovered, but from 1918 to 1947, all seven of these missing elements were discovered what is the colour of the former chemical element? Bluish-white transition metal what does it react when it comes in contact with other elements? Osmium tetroxide  is formed when powdered osmium is exposed to air,  it  forms red osmates upon reaction with a base, with ammonia, it forms the nitrido-osmates, etc. can you state one physical property of the first element you mentioned? UNANSWERABLE
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Osmium [SEP] Isotopes
Osmium has seven naturally occurring isotopes, six of which are stable: , , , , , and (most abundant) . undergoes alpha decay with such a long half-life years, approximately times the age of the universe, that for practical purposes it can be considered stable. Alpha decay is predicted for all seven naturally occurring isotopes, but it has been observed only for , presumably due to very long half-lives. It is predicted that and can undergo double beta decay but this radioactivity has not been observed yet.