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Final answer:
The answer addresses physical properties of hydrogen, characteristics of group 17 elements, cations causing water hardness, methods of water hardness removal, acid-base titration, halogens reactivity, boiling points of isomers, and IUPAC names of compounds.
Explanation:
Physical Properties of Hydrogen:
- Colorless and odorless gas
- Low density
- Highly flammable
Group 17 Elements:
- Group: Halogens
- Least Reactive: Iodine
- Solid at Room Temperature: Iodine
Cations Causing Hardness of Water: Calcium (Ca2+) and Magnesium (Mg2+)
Methods of Removal of Permanent Hardness of Water: Ion exchange resin and boiling
Halogen Reactivity: Fluorine & Chlorine are gases at room temperature, Bromine is liquid, and Iodine is solid due to increased molecular mass.
Boiling Points of Isomers in Decreasing Order: 2,2-dimethylpropane, 2-methylbutane, pentane
IUPAC Names of Compounds:
(1) 1-bromo-butane and propan-1-ol
(II) 2-methylbutane
Learn more about Properties of hydrogen, group 17 elements, water hardness, halogens, isomers, IUPAC nomenclature here:
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