Match the columns.

Correct option is D

The correct answer is (d) i-d, ii-c, iii-b, iv-a.
 Alkali metals (i): These elements are found in Group 1 of the Modern Periodic Table. They include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). These metals are highly reactive, especially with water.
 Alkaline earth metals (ii): These elements are located in Group 2 of the Periodic Table. They include beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are also reactive, though less so than the alkali metals.
 Halogens (iii): These elements are in Group 17 of the Periodic Table. The group includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Halogens are highly reactive nonmetals and form salts when combined with metals.
 Noble gases (iv): These elements are found in Group 18 of the Periodic Table. The noble gases include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). They are known for their lack of reactivity due to having a full valence shell of electrons.
Information Booster:
 Alkali Metals:
o Properties: Soft, highly reactive, especially with water, form strong bases (alkalis).
o Examples: Sodium (Na) reacts vigorously with water to produce sodium hydroxide (NaOH) and hydrogen gas (H₂).
 Alkaline Earth Metals:
o Properties: Harder than alkali metals, less reactive but still form basic oxides and hydroxides.
o Examples: Magnesium (Mg) burns with a bright white flame and is used in flares and fireworks.
 Halogens:
o Properties: Nonmetals, highly reactive, especially with alkali and alkaline earth metals to form salts.
o Examples: Chlorine (Cl) is used to disinfect water and in the production of PVC (polyvinyl chloride).
 Noble Gases:
o Properties: Colorless, odorless, inert under most conditions, complete valence electron shell.
o Examples: Neon (Ne) is used in neon signs due to its ability to emit bright light when electrically charged.