Valence Electrons and Ion Charges Explained

What are the two main directions in which patterns can be observed on the periodic table?

• Top to bottom and left to right

• Diagonal and circular

• Top to bottom and diagonal

• Circular and left to right

What are valence electrons?

• Electrons in the innermost shell

• Electrons in the outermost shell

• Protons in the nucleus

• Neutrons in the nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does boron have?

• 5

• 4

• 2

• 3

Which group on the periodic table has elements with one valence electron?

• Group 2

• Group 18

• Group 13

• Group 1

What is the octet rule?

• Atoms seek to have eight protons in their nucleus

• Atoms seek to have eight neutrons in their nucleus

• Atoms seek to have eight electrons in their innermost shell

• Atoms seek to have eight electrons in their outer shell

How many electrons does sodium have in its outermost shell?

• 1

• 7

• 8

• 2

What happens to an atom when it loses an electron?

• It becomes negatively charged

• It becomes positively charged

• It remains neutral

• It becomes a neutron

What is a cation?

• An atom with more neutrons than protons

• An atom with equal protons and electrons

• An atom that has lost electrons

• An atom that has gained electrons

Which group on the periodic table does not form ions?

• Group 18

• Group 13

• Group 2

• Group 1

What charge do elements in Group 15 typically have when they form ions?

• +3

• -3

• +2

• -2