Periodic Table of Elements Questions

atomic radius decreases going _____ and _______

How did Mendeleev organize his periodic table?

What year did Mendeleev make his discoveries?

What did Dalton first try concerning the periodic table?

As atomic number increases through a group, how does the atomic radius change?

The periodic table is arranged by __________ atomic number

__________ does not react with acids

Do nonmetals or metals have a smaller number of valence electrons?

What is the bond called when a metal and a nonmetal bond together?

An atom is stable when it has _______ valence electrons

Which group contains the alkali metals?

What other element could the Hindenburg be filled with that would be less reactive and weigh less than hydrogen?

How many valence electrons does neon (Ne) have?

How many valence electrons does calcium (Ca) have?

Do metals or nonmetals have lower densities?

Are metals or nonmetals good conductors of electricity?

How many valence electrons does indium (In) have?

Which group contains the noble gasses?

Are nonmetals or metals dull and brittle?

Which nonmetal is extremely reactive and can cause accidents like the Hindenburg disaster?