<h2>Answer 1</h2>
<u>The noble gases are the least</u><u> reactive</u><u> of any elements on the periodic table.</u>
<h2>Explanation:</h2>
All of the elements in Group Zero are noble gases. The list includes helium, neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). They are also called inert gases because they do not react with other elements of periodic table. The reason behind their inertness is that their outermost shell is complete and they do not have the tendency to lose or gain electrons.
<h2>Answer 2:</h2>
<u>The </u><u>Halogens</u><u> form acidic compounds with hydrogen</u>
<h2>Explanation:</h2>
The non metals in group 7 of the periodic table are known as the halogens. When they react wit hydrogen their respective acid is formed For example, hydrogen chloride (HCl)is produced when hydrogen combines with Chlorine and in the same way Hydrogen Bromide is produced when Bromine reacts with hydrogen.
<h2>Answer 3:</h2>
<u>The halogens are the most reactive among all the </u><u>non metals</u>
<h2>Explanation:</h2>
The non-metal elements in Group 7 are known as the halogens which consist of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). They get less reactive as we go down the group. This is the opposite trend to that seen in the alkali metals in Group 1 of the periodic table which are reactive among metals.
