Question

question 10 (2 points) which has an ionic potential less than 10 nm -1 (low charge, large radius) si al mg c k

Explanation:

Step1: Recall ionic potential concept

Ionic potential ($\phi$) = $\frac{charge}{radius}$. Elements with low - charge and large radius will have low ionic potential.

Step2: Analyze each element

• Silicon (Si): Usually forms covalent compounds rather than simple ions with low ionic potential characteristics in the context of this comparison.
• Aluminium (Al): Forms $Al^{3 + }$ ions. High charge leads to relatively high ionic potential.
• Magnesium (Mg): Forms $Mg^{2+}$ ions. Moderate charge.
• Carbon (C): Usually forms covalent bonds and not simple ions with the typical ionic - potential behavior we are looking for here.
• Potassium (K): Forms $K^{+}$ ion. It has a single positive charge and a relatively large atomic and ionic radius among these elements due to being in a lower period. So, it has a low ionic potential.

Answer:

K