Periodic Trends II

Elements Z and X are compared. Element Z is larger than Element X. Based on this you could say: 

• Element Z is further to the left side of the periodic table
• Element X is closer to the top of the periodic table 
• Element Z and X are probably in the same group 
• A and/or B

Tags

NGSS.HS-PS1-1

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

Tags

NGSS.HS-PS1-1

Which statement correctly and completely identifies a trend?

• Atomic radius decreases across a period and increases down a group.
• Electronegativity decreases across a period and decreases down a group.
• Ionization energy increases across a period and increases down a group.
• Ionic radius increases across a period and increases down a group.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which one of the following atoms has the largest radius?

• O

• S

• F

• Cl

Which one of the following atoms has the largest radius?

• Sr

• K

• Ca

• Rb

Which of the following has the smallest radius?

• Na

• P

• Cl

• Br

Chlorine is much more likely to exist as an negative ion than is sodium. This is because __________.

• chlorine is bigger than sodium

• chlorine has a greater ionization energy than sodium does

• chlorine has a greater electronegativity than sodium does

• chlorine is a gas and sodium is a solid

The ability of an atom in a molecule to attract electrons is best quantified by the __________.

• Ionization energy

• Electronegativity

• Atomic Radius

• Diamagnetism

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

• decreases, increases

• increases, increases

• increases, decreases

• stays the same, increases