Question

based on the periodic table shown, elements from columns b and e will combine in which ratio to form an ionic compound?

Explanation:

Step1: Determine the charge of elements in column B

Elements in column B (Group 1 of the periodic table) lose 1 electron to form \(+1\) ions.

Step2: Determine the charge of elements in column E

Elements in column E (Group 6 of the periodic table) gain 2 electrons to form \(-2\) ions.

Step3: Use charge balance for ionic compound

To form a neutral ionic compound, let the number of \(B\) ions be \(x\) and \(E\) ions be \(y\). Using charge balance \( (+1)x+(-2)y = 0\). Solving for \(\frac{x}{y}\), we get \(x = 2y\) or \(\frac{x}{y}=\frac{2}{1}\).

Answer:

The ratio of elements from column \(B\) to column \(E\) is \(2:1\).