Periodic Table: Metals, Nonmetals, Metalloids

Where on the periodic table are nonmetals found? ​ (a)   the staircase except for ​ (b)   .

• To the right of
• Hydrogen, H
• To the left of
• On
• Carbon, C
• Helium, He

Properties of metals include: Malleable, ductile, shiny, ________

• conductive

• fragile

• brittle

• transparent

State of matter at room temperature for metals: ______ except for mercury (Hg), which is a _____

• solid; liquid

• liquid; gas

• gas; solid

• solid; gas

State of matter at room temperature for metalloids: All __________.

• solid

• liquid

• gas

• plasma

State of matter at room temperature for nonmetals: Can be ​ (a)   such as carbon or ​ (b)   such as oxygen, with Bromine, Br, the only ​ (c)  

• Solid
• Gas
• Liquid

Why isn’t the number of neutrons for each element shown directly on the periodic table?

• Atoms of the same element can have different numbers of neutrons.

• Neutrons are not present in all elements.

• Neutrons have a positive charge.

• Neutrons determine the atomic number.

Elements on the periodic table are listed in order of ​ (a)   , which is equal to the number of ​ (b)   by definition​.

• atomic number
• protons
• neutrons

A period on the periodic table goes _______

• down

• across

• on the staircase

A group on the periodic table goes

• down

• across

• along the staircase

Which element is in group 6, period 4 of the periodic table?

• chromium

• hafnium

• molybdenum

• rhenium