Periodic Table Classifications and Trends

Electronegativity is...

• how good an atom is at attracting electrons
• the ability of an atom to lose electrons
• the energy required to remove an electron from a specific atom
• how easy it is to make friends. 

Tags

NGSS.HS-PS1-1

Ionization energy is...

• the energy required to add an electron to a specific atom
• how much energy it takes to remove an electron from an atom
• the energy required to shield the outer electrons from the nucleus
• a measure of the ability of an atom to attract electrons

Tags

NGSS.HS-PS1-2

Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

Tags

NGSS.HS-PS1-1

As you move from left to right across the Main Group elements of the periodic table, the number of valence electrons...

• Increases

• Decreases

• Remains the same

As you move down a group on the periodic table, the number of valence electrons....

• Increases

• Decreases

• Remains the same

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following will have a higher electronegativity than Phosphorus (₁₅P)?

• Nitrogen (₇N)

• Aluminum (₁₃Al)

• Silicon (₁₄Si)

• Arsenic (₃₃As)

Which of the following will have a higher ionization energy than Magnesium (₁₂Mg)?

• ₄Be

• ₂₀Ca

• ₁₅P

• ₃Li

The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

Tags

NGSS.HS-PS1-1

Which statement correctly and completely identifies a trend?

• Atomic radius decreases left to right across a period and increases down a group.

• Electronegativity decreases left to right across a period and decreases down a group.

• Ionization energy increases left to right across a period and increases down a group.

• Ionic radius increases left to right across a period and increases down a group.

Larger electronegativity

• ₁₆S

• ₁₇Cl