Questions: Which pair of element and most common ionic charge is correct? Na / 1- C/6+ F/1+ Ba / 2+

Solution Steps

To determine the correct pair of element and its most common ionic charge, we need to know the typical ionic charges for each element listed:

• Na (Sodium): Sodium is an alkali metal found in Group 1 of the periodic table. Alkali metals typically lose one electron to form a cation with a charge of \(1+\).
• C (Carbon): Carbon is a non-metal found in Group 14. It typically forms covalent bonds rather than ionic ones, but in ionic compounds, it can have a charge of \(4+\) or \(4-\), not \(6+\).
• F (Fluorine): Fluorine is a halogen found in Group 17. It typically gains one electron to form an anion with a charge of \(1-\).
• Ba (Barium): Barium is an alkaline earth metal found in Group 2. It typically loses two electrons to form a cation with a charge of \(2+\).

Now, compare the given pairs to the typical ionic charges:

• Na / 1-: Incorrect, as sodium typically forms a \(1+\) cation.
• C / 6+: Incorrect, as carbon does not typically form a \(6+\) ion.
• F / 1+: Incorrect, as fluorine typically forms a \(1-\) anion.
• Ba / 2+: Correct, as barium typically forms a \(2+\) cation.

Final Answer