Answer
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Step 1:: Recall the electron configuration for calcium.
The electron configuration for calcium is $$1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$$.
Calcium (Ca) is an element in the fourth period of the periodic table, so it has 4 energy levels. Its atomic number is 20, which means it has 20 electrons.
Step 2:: Write the Lewis structure for calcium.
To write the Lewis structure for calcium, we need to represent its valence electrons. Since calcium has 2 valence electrons in the 4s orbital, our Lewis structure will consist of two dots around the symbol Ca.
Step 3:: Draw the Lewis dot diagram for calcium.
\begin{array}{cc} & \cdot \ \text{Ca} & \cdot \end{array}
Final Answer
The Lewis dot diagram for calcium is shown above, with two valence electrons represented by the dots around the Ca symbol.
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