Periodic Trends - Post-Assessment

Which list of elements is arranged in order of increasing atomic radii?

• Li, Be, B, C
• Sr, Ca, Mg, Be
• Sc, Ti, V, Cr
• F, Cl, Br, I

Tags

NGSS.HS-PS1-1

The amount of energy required to remove the outermost electron from a gaseous atom in the ground state is known as

• first ionization energy
• activation energy
  
• conductivity
• electronegativity

Which Period 4 element has the most metallic properties?

• As
• Br
• Ge
• Sc

An element that has a low first ionization energy and good conductivity of heat and electricity is classified as a

• metal
• metalloid
• non-metal
• Noble Gas

Tags

NGSS.HS-PS1-1

Based on electronegativity values, which type of elements tends to have the greatest attraction for electrons in a bond?

• metals
• non-metals
• metalloids
• Noble Gases

The elements located in the lower left corner of the Periodic Table are classified as

• metals
• non-metals
• metalloids
• Noble Gases

What occurs when an atom loses an electron?

• The atom’s radius decreases and the atom becomes a negative ion.
• The atom’s radius decreases and the atom becomes a positive ion
• The atom’s radius increases and the atom becomes a negative ion
• The atom’s radius increases and the atom becomes a positive ion

Which element is malleable and can conduct electricity in the solid phase?

• N
• Mg
• Br
• Ar

Tags

NGSS.HS-PS1-1

Which general trend is demonstrated by the Group 17 elements as they are considered in order from top to bottom on the Periodic Table?

• a decrease in atomic radius
• a decrease in electronegativity
• an increase in first ionization energy
• an increase in nonmetallic behavior

An electron in an atom moves from the ground state to an excited state when the energy of the electron

• decreases

• increases

• remains the same

• transfers to another atom