Classify the following species as paramagnetic, diamagnetic or ferromagetic.
(a)Sodium [Z=11] (b) `Ca^(2+)` catipon[Z=20]
(c) Iron[Z=26] (d)`Cl^(-)` anion[Z=17]

Out of the following transition elements, the maximum number of oxidation states are shown by (a) Sc(Z=21) (b) Cr (Z=24) (c) Mn (Z=25) (d) Fe (Z=26)

Write the electronic configuration of the following elements : Carbon (Z = 6) , neon (Z = 10) , magnesium (Z = 12), Chlorine (Z = 17), calcium (Z = 20) , chromium (Z = 24), iron (Z = 26) and rubidium (Z = 37).

Which of the following is a linear objective ? A) z=ax+by B) z leq ax+by C) z gt ax+by D) z!=ax+by

How many unpaired electrons are present in the ground state of (i) P(Z = 15) (ii) Fe^(2+) (Z = 26) (iii) Cl^(-)(Z = 17) ?

Account fot the following: The electron gain enthalpy of Cl (Z = 17 )is more negative than that of Fluorine ( Z = 9 ).

Two equal volume flasks cotaining equal masses of H_(2) and CH_(4) are at 100 K and 200 K , repectively. The molecular diameter of CH_(4) is twice that of H_(2) . ( i ) Which of the following statement about Z_(1) (number of collisions per molecule per cm^(3) per second) is true? ( a ) Z_(11) of H_(2)=2Z_(1) of CH_(4) ( b ) Z_(11) of H_(2)=4Z_(1) of CH_(4) ( c ) Z_(11) of H_(2)=Z_(1) of CH_(4) ( d ) Z_(11) of H_(2)=8Z_(1) of CH_(4) ( ii ) Which of the following statement about Z_(11) (number of bimolecular collisions per cm^(3) per second) is true? ( a ) Z_(1) of H_(2)=4Z_(11) of CH_(4) ( b ) Z_(11) of H_(2)=8Z_(11) of CH_(4) ( c ) Z_(1) of H_(2)=16Z_(11) of CH_(4) ( d ) Z_(1) of H_(2)=32Z_(11) of CH_(4)

Give the decreasing order of E_((M^(3+))/(M^(2+))^(c-) Value for the following: (a). Co(Z=27) (b). Mn(Z=25) (c). Fe(Z=26) (d). Cr(Z=24)

Using the Aufban principal , write the electron configuration for the gropuped srtate of the following atomic boron (Z = 5) neon (Z = 10) aluminum (Z = 13) chlorine (Z = 17) calcium (Z = 20) , rabidium (Z = 13)