Question

a lewis structure with placeholder elements is shown. if the formal charge of the central atom is +1, choose the possible identities of the central atom.

Explanation:

Step1: Recall the formal - charge formula

The formula for formal charge \(FC\) is \(FC=\text{Valence }e^--\text{Bonds}-\text{Lone }e^-\). Let the central atom have \(x\) valence electrons. From the Lewis structure, the central atom has \(2\) bonds and \(3\) lone - pairs (6 lone electrons). Given \(FC = + 1\).

Step2: Substitute into the formula

We substitute into the formula: \(+1=x - 2-6\).

Step3: Solve for \(x\)

Solving the equation \(x-8 = 1\) gives \(x=7\) valence electrons.

Answer:

C. \(Cl\), \(Br\), or \(I\)