Question 1
When Calcium (Ca) bonds with oxygen, it gives up two electrons. What is the charge of the Ca ion in this compound?
◦ +1
◦ -2
◦ +2
◦ -1
Question 2
Which electrons are responsible for most chemical bonding?
◦ innermost electron shell because the electrons can be transferred to the nucleus
◦ outer electron shell because these electrons can be readily exchanged with adjacent atoms
◦ middle electron shell because they are intermediate in distance between the nucleus and the adjacent atom that bonds with the atom
◦ Any electron can exchange with adjacent atoms to form a bond; there is no preference.