Duplicate of Periodic Table of Elements

The standard that was used to invent the atomic mass unit AMU was the mass of the

What is a horizontal row called on the Periodic Table?

Chlorine and Iodine are members of which family on the periodic table?

The subatomic particle located outside the nucleus is called the ______________.

How many periods are on the Periodic Table of Elements?

Be, Mg, and Ca are all in this group.

Which element has the larger atom? Lithium or Sodium?

The usefulness of Mendeleev's periodic table was confirmed by

Mendeleev made the first periodic table, arranging the elements by their?

What is the vertical column on the Periodic Table called?

As you go down the periodic table the atomic size?

Elements within the same _____________ are most likely to undergo the same kinds of reactions.

Helium is most like which of these elements?

As you  go across a period the atomic size?

The family of atoms with chlorine and fluorine is called the ___________________ .

The periodic table of elements is arranged in order of __________________ .

What is another name for a family on the Periodic Table?

An atom with a charge is called an_______________.