Elements that are lined up horizontally on the periodic table are called

Elements that are lined up vertically on the periodic table are called

An element's chemical reactivity with other elements depends on that atom's

The element that has 3 energy levels and 6 valence electrons is

Which of the following is a noble gas?

The Atomic Number of an element represents...

What are the elements located between the Nonmetals and Metals known as?

Most mass of the atom is located in:

The neutral particles are called:

What determines how an atoms reactivity?

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