Question

chemical bonds form when atoms share valence electrons or when one atom transfers one or more valence electrons to the other atom. when electron transfer occurs, one atom loses electrons, and the other atom gains electrons. atoms will share, lose, or gain electrons until their valence shells are full. metal atoms tend to lose, or give up, valence electrons when forming chemical bonds. here are the lewis dot structures of three metal atoms: k ca· ·al· nonmetal atoms, with the exception of noble gases, tend to gain or share valence electrons when forming chemical bonds. here are the lewis dot structures of three nonmetal atoms: ·n· ·s· ·cl· select the true statements. use the periodic table and the examples above to help. oxygen atoms tend to gain or share electrons when forming chemical bonds. atoms with three or fewer valence electrons tend to lose electrons when forming chemical bonds. phosphorus atoms tend to lose electrons when forming chemical bonds. magnesium atoms tend to lose electrons when forming chemical bonds.

Explanation:

1. Oxygen is a non - metal. Non - metal atoms (except noble gases) tend to gain or share valence electrons when forming chemical bonds, so the statement about oxygen is true.
2. Atoms with three or fewer valence electrons, like metals, tend to lose electrons when forming chemical bonds, so this statement is true.
3. Phosphorus is a non - metal with 5 valence electrons. Non - metals tend to gain or share electrons, not lose them, so the statement about phosphorus is false.
4. Magnesium is a metal. Metal atoms tend to lose valence electrons when forming chemical bonds, so the statement about magnesium is true.

Answer:

• Oxygen atoms tend to gain or share electrons when forming chemical bonds.
• Atoms with three or fewer valence electrons tend to lose electrons when forming chemical bonds.
• Magnesium atoms tend to lose electrons when forming chemical bonds.