Radon is used as a tracer in medical research because it<...
Radon is used as a tracer in medical research because it
is monatomic
is radioactive
is a noble gas
has a complete valence shell
has a low boiling point
Correct answer is B
No explanation has been provided for this answer.
The mathematical expression of PH is ...
River contaminated by alkali waste will have a pH of about. ...
The ionic radii of metals are usually ...
Which of the following elements would produce coloured ion in agueous solution? ...
NH3 + H3O+ → NH4+ + H2O. It may be deduced from the reaction above that? ...