Which of th e following elements would most likely have properties similar to calcium? A Selenium B. Lithium Magnesium D. Krypton

## Step 1<br />The problem is asking us to identify which of the given elements would most likely have properties similar to calcium. This is a question about the periodic table and the concept of periodic trends.<br /><br />## Step 2<br />Elements in the same group (vertical column) of the periodic table have similar chemical properties. This is because they have the same number of valence electrons, which are the electrons in the outermost shell of an atom that participate in chemical bonding.<br /><br />## Step 3<br />Calcium is in Group 2 of the periodic table, also known as the Alkaline Earth Metals. Therefore, we need to find the element among the options that is also in Group 2.<br /><br />## Step 4<br />Looking at the options, we can see that Magnesium is also in Group 2 of the periodic table. Therefore, Magnesium would have properties most similar to Calcium.