Question

the characteristics of isotopes

Answer 1

isotopes are the element having same atomic but different mass number .
properties::
they have same physical properties
they have different chemical properties

Answer 2

hello friend..!!

properties of isotopes :

⇒ they have different physical properties 

⇒ they have similar (same) chemical properties 

⇒ they are kept in same place in the periodic table 

⇒ radioactive properties differ 

some application's : 

⇒ isotopes are used to study plant metabolic functions 

⇒ isotopes are used in the kinetic study of reaction mechanism 

⇒ some isotopes like C-14 are used in detecting the ages of the fossils .

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hope it is useful...!!