Write the name and atomic number of the following elements(i)The first halogen(ii)The third alkali metal (iii)The fourth alkaline earth metals (iv)The sixth element of the second transition series (v) The second inner transition element (vi)The fifth noble gas.

Write the name and atomic number of the following elements(i)The first

1.	Write the name and atomic number of the following elements(i)The first halogen(ii)The third alkali metal (iii)The fourth alkaline earth metals (iv)The sixth element of the second transition series (v) The second inner transition element (vi)The fifth noble gas.
Answer» Solution :(i) Fluorine ,F (Z=9) (ii) Potassium , K (Z=19) (iii)Strontium ,SR (Z=38) (iv)Ruthenium ,Ru (Z=44) (v)Praseodymium ,Pr (Z=59) (VI)XENON , XE (z=54)