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

question 26

Essay

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.

---

Definitions:

Current Ratio

A financial metric used to evaluate a company's ability to pay short-term obligations with its short-term assets.

Current Assets

Short-term resources expected to be converted into cash within one year, including cash, inventory, and accounts receivable.

Current Liabilities

Obligations or debts that a company is expected to pay off within one year or within its normal operating cycle, whichever is longer.

Creditor's Decision

The process through which a creditor analyzes the financial stability and creditworthiness of potential borrowers before lending money.