Periodic Table and Trends

Which atom has the largest atomic radius?

• Magnesium

• Calcium

• Barium

• Radium

The arrangement of elements from left to right in Period 4 is based on:

• atomic mass

• atomic number

• number of electron shells

• number of oxidation states

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Compared to the atoms of nonmetals in Period 3, the atoms of metals in Period 3 have:

• fewer valence electrons

• more valence electrons

• fewer electron shells

• more electron shells

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which list includes elements with the most similar chemical properties?

• Be, Mg, Ca

• Al, Si, P

• O, S, Cl

• Be, Mg, Ca

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, electronegativity increases

• Atomic radius increases, electronegativity decreases

• Both increase

• Both decrease

As atomic number increases within Group 15, atomic radius:

• decreases only

• increases only

• decreases then increases

• increases then decreases

Compared to a potassium atom, a potassium ion has:

• smaller radius

• larger radius

• fewer protons

• more protons

An ion of which element has a larger radius than an atom of the same element:

• Aluminum

• Chlorine

• Magnesium

• Sodium

Which term represents the attraction one atom has for the electrons in a bond with another atom?

• Electronegativity

• Electrical conductivity

• Ionization energy

• Mechanical energy

Which statement describes the general trends in electronegativity and first ionization energy as the elements in Period 3 are considered from Na to Cl?

• Electronegativity increases, ionization energy decreases

• Electronegativity decreases, ionization energy increases

• Both increase

• Both decrease