What is the name for an atom that loses one or more electrons?
An atom that loses one or more valence electrons to become a positively charged ion is known as a cation, while an atom that gains electrons and becomes negatively charged is known as an anion.
What is an atom called that gains or loses one or more electrons?
Explanation: When an atom gains/loses an electron, the atom becomes charged, and is called an ion. Gaining an electron results in a negative charge, so the atom is an anion. Losing an electron results in a positive charge, so atom ion is a cation.
What is the charge of an atom if it loses two electrons?
As discussed in class, the elements in the first column of the periodic table (excluding hydrogen) always lose one electron to get a +1 charge. The elements in the second column lose two electrons to get a +2 charge.
What is the charge of a magnesium atom if it loses 2 electrons?
+2
Why do cations form when an atom loses electrons?
Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are called cations. Most metals become cations when they make ionic compounds.
What do you think will happen to the two elements after gaining and losing electrons?
Answer: When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions. Most nonmetals become anions when they make ionic compounds.
What two elements lose 2 electrons when they react?
All Group 1 atoms can lose one electron to form positively charged ions. For example, potassium atoms do this to form ions with the same electron configuration as the noble gas argon. Group 2 atoms lose two electrons to form positively charged ions. For example, magnesium atoms form Mg2+ ions.