Answer:
False.
In an ionic bond, one atom donates electrons to another atom, resulting in the formation of ions with opposite charges. In the case of calcium (Ca) and oxygen (O), calcium has a 2+ charge because it donates two electrons, while oxygen has a 2- charge because it accepts two electrons.
To represent this ionic bond in a Lewis dot diagram, we would draw the Lewis symbols for calcium and oxygen separately, indicating the valence electrons as dots or crosses.
The Lewis dot diagram for calcium would show two valence electrons (as dots) around the symbol Ca.
The Lewis dot diagram for oxygen would show six valence electrons (as dots) around the symbol O.
Then, to show the formation of the ionic bond, we would draw an arrow from the two valence electrons of calcium towards the oxygen atom, representing the transfer of electrons.
The resulting Lewis dot diagram would show the two valence electrons of calcium transferred to oxygen, satisfying the octet rule for both atoms. Calcium would now have a 0 charge, and oxygen would have a 2- charge.
Therefore, a Lewis dot diagram for an ionic bond between calcium and oxygen would contain one calcium atom (Ca) and one oxygen atom (O), with an arrow representing the transfer of two electrons from calcium to oxygen.