Unit 10-Periodic Table-Test Study Aide

In a periodic table, a set of properties repeats from

• group to group

• row to row

• column to column

• element to element

Which of the following elements in the halogen group is the most likely to be solid at room temperature?

• Fluorine

• Chlorine

• Bromine

• Iodine

Why are noble gases inert (nonreactive)

• They only bond with other noble gases

• They have a full valence shell (8 electrons)

• They form +1 cations

• They all have only one electron in their outermost energy level

Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element?

• mass number

• atomic mass unit

• atomic number

• isotope number

Most metallic elements have all of these properties EXCEPT

• Being easily crumbled into pieces

• A shiny luster

• Being a good conductor of electricity

• A high melting point

Elements in groups 3-12 are called _________________.

• Metalloids

• Transition Metals

• Noble Gases

• Isotopes

Mendeleev arranged the known chemical elements in a table according to increasing

• atomic number

• number of electrons

• number of protons

• mass

Which statement is true about the metalloid silicon?

• Silicon does not conduct electric current under any circumstances

• Silicon is a better conductor of electric current than sulfur is

• Silicon's ability to conduct electric current does not vary with temperature

• Silicon is a better conductor of electric current than silver is

At room temperature, none of the metals are

• liquids

• soft

• malleable

• gases

Which general statement does NOT apply to metals?

• Most metals are brittle

• Most metals are malleable

• Most metals are good conductors of electric current

• Most metals are ductile