Periodicity

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

Tags

NGSS.HS-PS1-1

Which general trends in atomic radius and electronegativity are observed as the elements in Period 3 are considered in order of increasing atomic number?

• Atomic radius decreases and electronegativity increases.
• Atomic radius increases and electronegativity decreases.
• Both atomic radius and electronegativity increase.
• Both atomic radius and electronegativity decrease.

Which ion has the smallest radius?

• O^2-

• S^2-

• Se^2-

• Te^2-

A magnesium atom that loses two electrons becomes

a

• positive ion with a smaller radius

• negative ion with a smaller radius

• positive ion with a larger radius

• negative ion with a larger radius

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An ion of which element has a larger radius than an

atom of the same element?

• aluminum

• chlorine

• magnesium

• sodium

Tags

NGSS.HS-PS1-1

Based on Table S, which group on the Periodic Table

has the element with the highest electronegativity?

• Group 1

• Group 2

• Group 17

• Group 18

Which term represents the strength of the attraction an atom has for the electrons in a chemical bond?

• Electrical conductivity

• Electronegativity

• First ionization energy

• Specific heat capacity

An atom of which element has the strongest attraction for the electrons in a bond?

• Aluminum

• Carbon

• Chlorine

• Lithium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As atomic number increases within Group 15 on the

Periodic Table, atomic radius

• decreases, only

• increases, only

• decreases, then increases

• increases, then decreases

Which trends are observed as each of the elements within Group 15 on the Periodic Table is considered in order from top to bottom?

• Their metallic properties decrease and their atomic radii decrease

• Their metallic properties decrease and their atomic radii increase

• Their metallic properties increase and their atomic radii decrease

• Their metallic properties increase and their atomic radii increase

Tags

NGSS.HS-PS1-1