On the periodic table, lithium and beryllium are in different groups. Which statement describes why the two elements are in different groups?(1 point) Responses They have a different number of electron shells. They have a different number of electron shells. They have different atomic numbers. They have different atomic numbers. They are different colors. They are different colors. They have a different number of electrons in their outer shells.
1 answer
The correct statement that describes why lithium and beryllium are in different groups on the periodic table is: They have a different number of electrons in their outer shells.
Lithium (Li) has one electron in its outer shell, while beryllium (Be) has two electrons in its outer shell, which places them in different groups.
