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| 1. |
Which of the following has highest ionisation energy ? (a) Cu (b) Au (c) Ag (d) All have equal ionisation energies |
| Answer» <p style="text-align: justify;"><span style="color:#000000"><span style="font-family:Arial,Helvetica,sans-serif"><strong>Correct option (b) Au</strong></span></span></p><p style="text-align: justify;"><span style="color:#000000"><span style="font-family:Arial,Helvetica,sans-serif"><strong>Explanation:</strong></span></span></p><p style="text-align: justify;"><span style="color:#000000"><span style="font-family:Arial,Helvetica,sans-serif">The ionisation potential of Cu, Ag and Au are 7.7 eV, 7.5 eV and 9.2 eV. So Au (gold) has highest ionisation potential.</span></span></p> | |