Q.What is meant by diamagnetic and paramagnetic metal ? Give one example of diamagnetic and paramagnetic transition metal and lanthanoid metal.

Step 1. Define diamagnetic (Section 8.6.4). A diamagnetic substance is one that is REPELLED when a magnetic field is applied to it. This happens when every electron in the species is paired up -- there is no net unpaired-electron spin to interact favourably with the applied field.

Step 2. Define paramagnetic. A paramagnetic substance is one that is ATTRACTED into an applied magnetic field, because it has one or more UNPAIRED electrons, each contributing a small magnetic moment (via the spin-only formula mu = sqrt(n(n+2)) BM for first-row species).

Step 3. Give a transition-metal example of each. Diamagnetic transition-metal example: Zn2+ (3d10, Table 8.7/8.8), which has a completely filled 3d subshell with all electrons paired. Paramagnetic transition-metal example: Cu2+ (3d9), which has one unpaired electron left over after nine electrons fill the five 3d orbitals. …

Defining both magnetic classes from Section 8.6.4 and selecting one clean d0/d-full-shell example and one clean unpaired-electron example eac …

• Swapping which direction diamagnetic/paramagnetic substances move relative to an applied field (diamagnetic is REPELLED, paramagnetic is ATTRACTED -- easy to reverse from memory). …