Question

An atom has an atomic number of 56. Answer the following questions about this element.

What is the element's symbol?
If it has a charge of 1⁺, how many electrons does it have?
What is the name of the group, or family, is it in?

Answer 1

An atom with an atomic number of 56 is Barium (Ba); if it has a 1+ charge, it has 55 electrons and it's part of the alkaline earth metals family.

Step-by-step explanation:

An atom with an atomic number of 56 is the element Barium, which has the symbol Ba. If this atom has a charge of 1⁺, then it has one less electron than its number of protons. Since the atomic number equals the number of protons, and Barium has 56 protons, this means that a Ba⁺ ion would have 55 electrons. Barium belongs to the alkaline earth metals family in the periodic table, which is Group 2.