Periodic Law

Elements in the s and p blocks of the periodic table are called

• alloys

• representative elements

• metals

• transition metals

Elements in Group 18 have

• very low reactivity

• good conductivity

• very high reactivity

• metallic character

Nonmetallic elements in Group 17 that react with most metals to form salts are

• alkali metals

• halogens

• lanthanides

• noble gases

The outer-level electron configuration of a neutral alkaline-earth metal atom consists of

• one electron in the s orbital

• two electrons in the s orbital

• one electron in the p orbital

• two electrons in the p orbital

Tags

NGSS.HS-PS1-1

To which group does hydrogen belong?

• Group 1

• Group 2

• Group 18

• None of the above

In which group is an element that has an outer-level electron configuration consisting of one electron in the d orbital and two electrons in the ns orbital?

• Group 1

• Group 2

• Group 3

• Group 5

Tags

NGSS.HS-PS1-1

Down a group in the periodic table, the change in ionization energy is due to

• increasing electron shielding

• decreasing charge of the nucleus

• increasing neutrons in the nucleus

• decreasing atomic radii

Across a period in the periodic table, atomic radii generally

• decrease

• decrease, then increase

• increase

• increase, then decrease

Down a group in the periodic table, atomic radii generally

• decrease

• remain constant

• increase

• vary unpredictably

One of the least electronegative elements would be found on the periodic table in

• Group 1, Period 7

• Group 3, Period 4

• Group 5, Period 3

• Group 17, Period 2

Tags

NGSS.HS-PS1-1