Identify by number (1A-8A) the main group of the periodic table to which the described element (X) belongs, in each of the following cases.
a. X commonly forms the ion X^2-.
b. X reacts with water according to the equation
X(s) + 2H₂O(l) → X(OH)₂(aq) + H₂(g)
c. X exists as molecules, X₂; its hydride has the formula HX.
d. X is a metal which reacts with oxygen to produce the peroxide, X₂O₂.

Question

Quizplus · Accepted Answer

The Answer of Identify by number (1A-8A) the main group of the periodic table to which the described element (X) belongs, in each of the following cases. a. X commonly forms the ion X^2-. b. X reacts with water according to the equation X(s) + 2H₂O(l) → X(OH)₂(aq) + H₂(g) c. X exists as molecules, X₂; its hydride has the formula HX. d. X is a metal which reacts with oxygen to produce the peroxide, X₂O₂.

Identify by Number (1A-8A) the Main Group of the Periodic