In which of the following molecule, the internuclear distance will be maximum:
1. CsI
2. CsF
3. LiF
4. LiI
Incorrect order among the following is:
1. | NH3 < PH3 < AsH3 – Acidic |
2. | Li < Be < B < C – Ist Ionization potential |
3. | Al2O3 < MgO < Na2O < K2O - Basic |
4. | Li+ < Na+ < K+ < Cs+ - Ionic radius |
The ions O2–, F–, Na+, Mg2+, and Al3+ are isoelectronic. Their ionic radii show:
1. | A significant increase from O2– to Al3+. |
2. | A significant decrease from O2– to Al3+. |
3. | An increase from O2– to F– and then a decrease from Na+ to Al3+. |
4. | A decrease from O2– to F– and then an increase from Na+ to Al3+. |
Ionic radii are:
1. | Inversely proportional to the square of effective nuclear charge. |
2. | Directly proportional to the effective nuclear charge. |
3. | Directly proportional to the square of effective nuclear charge. |
4. | Inversely proportional to the effective nuclear charge. |