Periodic Table and Trends

Who is given credit for the first periodic table

• Dalton

• Moseley

• Mendeleev

• Rutherford

Which element is an alkaline earth metal with 4 energy levels (rings)

• Mg

• Ca

• K

• Cl

Which nonmetal is a liquid at room temperature

• Ck

• Br

• I

• U

Which element has the largest atomic radius

• N

• F

• P

• Se

Which element has the smallest ionization energy

• F

• Ar

• S

• O

What is electronegativity

• the size of the atom

• ability to lose electrons

• ability to attract/gain electrons

• how reactive a substance is

Which has the smallest atomic radius?

• Mg

• Mg²⁺

• S

• S^2-

Which nonmetal is most reactive

• Ne

• Cl

• I

• S

Which element is a halogen in period 5

• I

• Br

• Cl

• F

Which metal is least reactive?

• Fe

• Sc

• Mg

• Na