Question

Which of the elements has the same Lewis dot structure as calcium (Ca)?

Answer 1

Answer:

$\boxed {\boxed {\sf A. \ Barium (Ba)}}$

Explanation:

Lewis dot structures illustrate the valence electrons in an element.

• Valence electrons are the outermost electrons in an atom that bond with other atoms by accepting or releasing electrons.

• The groups, or columns, of the Periodic Table have the same number of valence electrons.

Calcium is in group 2.

The other elements in this group are:

• Beryllium, Magnesium, Strontium, Barium, and Radium

So, all these elements have the same lewis dot structures because they have the same number of valence electrons.

Based on the answer choices, choice A is correct.

Answer 2

It’s gonna be which ever element(s) that has the same number of valence electrons!!