Question

Identify the number of electrons in the outermost shell of the following elements:

\begin{array}{ll} \text{(i)} & {}^{12}_{6}\mathrm{C} \\[4pt] \text{(ii)} & {}^{19}_{9}\mathrm{F} \\[4pt] \text{(iii)} & {}^{28}_{14}\mathrm{Si} \end{array}

Answer 1

1. Carbon has 4 electrons in its outermost shell. 
2. Fluorine has 7 electrons in its outermost shell. 
3. Silicon has 4 electrons in its outermost shell.