Chem Unit 4 Review

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

• Ar
• He
• Kr
• Rn

Tags

NGSS.HS-PS1-1

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Atomic radius generally increases as we move __________.  

• down a group and from right to left across a period 
• up a group and from left to right across a period 
• down a group and from left to right across a period 
• up a group and from right to left across a period 

Tags

NGSS.HS-PS1-1

Order the following in increasing atomic radii: 
Ra, Be, Ca, Rb, H

• Ra, Be, Rb, H, Ca
• Rb, H, Ca, Be, Ra
• Ra, Rb, Ca, Be, H
• H, Be, Ca, Rb, Ra

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

Which of the following is true about a sulfur atom and a chlorine atom?

• Sulfur is larger and has higher ionization energy.
• Sulfur is larger and has lower ionization energy.
• Sulfur is smaller and has higher ionization energy.
• Sulfur is smaller and has lower ionization energy.

Tags

NGSS.HS-PS1-1

Which element has the greater ionization energy?

• Lead
• Silicon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Electronegativity _______ across a period and ______ down a group.

• increases, increases

• increases, decreases

• decreases, increases

• decreases, decreases

Tags

NGSS.HS-PS1-2

Which of these atoms is the most electronegative?

• Bromine

• Fluorine

• Silicon

• Potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

____________ is the tendency for an atom of an element to attract the electrons of another element when they are chemically combined.

• Electronegativity

• Atomic Radius

• Ionization Energy