Periodic Trends in Chemistry: Day 2 Insights

What are valence electrons?

• Protons in the nucleus

• Electrons in the innermost shell

• Electrons in the outermost shell

• Neutrons in the nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does an element in Group 2 have?

• 3

• 1

• 4

• 2

Tags

NGSS.HS-PS1-1

What charge do metals in Group 1 typically form when they become ions?

• +1

• +2

• -1

• +3

Which group of elements typically does not form ions?

• Group 1

• Group 17

• Group 14

• Group 18

What is ionization energy?

• Energy released when an electron is removed

• Energy released when an electron is added

• Energy required to remove an electron

• Energy required to add an electron

As you move up and to the right on the periodic table, ionization energy:

• Fluctuates

• Decreases

• Increases

• Stays the same

What is electronegativity?

• The ability of an atom to attract electrons in a bond

• The ability of an atom to lose electrons

• The energy required to remove an electron

• The energy released when an electron is added

Tags

NGSS.HS-PS1-2

Which element is the most electronegative?

• Oxygen

• Neon

• Helium

• Fluorine

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As you move down a group on the periodic table, electronegativity:

• Fluctuates

• Stays the same

• Decreases

• Increases

As you move up and to the right on the periodic table, atomic radius:

• Decreases

• Fluctuates

• Increases

• Stays the same