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Write the names and atomic numbers of the following elements:

(i) The fourth alkali metal 

(ii) The third alkaline earth metal 

(iii) The fifth element of the first transition series 

(iv) The first inner transition element 

(v) The sixth noble gas 

(vi) The second halogen

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(i) Rb (Z = 37)

(ii) Ca (Z = 20)

(iii) Mn (Z = 25)

(iv) Ce (Z = 58)

(v) Rn (Z = 86)

(vi) Cl (Z = 17)

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