Complete the following blanks (answers below):

1. The hybridization of Xe in XeF2 is ________, and its molecular geometry is ________.

2. In the Contact process, SO3 is absorbed in ________ to form ________ (oleum), because direct absorption in water produces ________.

3. The correct increasing order of acidic strength: ________ < ________ < ________ < HClO4.

4. The catalyst used at ________ °C in the Contact process Step 2 is ________.

5. Bleaching powder is prepared by passing ________ over ________. Its formula is ________.

6. XeF6 reacts with 3 moles of water to give ________ (explosive) and ________.

7. The transition temperature between rhombic and monoclinic sulfur is ________ °C.

8. Ozone turns KI-starch paper ________ because it liberates ________ from KI.

9. The shape of ClF3 is ________, with ________ lone pairs on the central Cl.

10. Fluorine does not form oxoacids because it lacks ________ and cannot show ________ oxidation states.