Match the properties given in Column I with the reansition elements given in Column II and select the correct answer using the code below the lists `:`
`{:(,"Column"I,,"Column"II,),(,("Property"),,("Transition elements"),),((a),"Highest oxidation state",,(p)" "Cr.,),((b),"Highest density",,(q)" "Os.,),((c ),"Element with maximum unparied electrons.",,(r)" "Tc.,),((d),"Radioactive transition element",,(s)" "Cu.,):}`
Code `:`

Options

A. `{:(,"(a)","(b)","(c)","(d)"),(,q,q,p,r):}`
B. `{:(,"(a)","(b)","(c)","(d)"),(,q,p,s,r):}`
C. `{:(,"(a)","(b)","(c)","(d)"),(,p,q,r,s):}`
D. `{:(,"(a)","(b)","(c)","(d)"),(,r,s,q,p):}`

Answer

1

Explanation

`(a)` Oxidation state `+8` of osmium.
`(b)` Density of osmium `22.57 g cm^(-3)`.
`(c )` Electron configuration of `Cr,[Ar]^(18)3d^(5)4s^(5)`, maximum number o funpaired electrons `=6`.
`(d)` To radioelective element.