Front

What are Groups on the periodic table?

Back

Vertical columns.

Front

How many valence electrons does an element with atomic number 13 have?

Back

3 valence electrons.

Front

What is the atomic number of chlorine?

Back

17.

Front

What is the atomic number of neon?

Back

10.

Front

What type of element is chlorine?

Back

Non-metal.

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of valence electrons?

Back

They determine an element's chemical properties and reactivity.

Front

How do you determine the number of valence electrons for main group elements?

Back

By looking at the group number on the periodic table.

Front

What is the difference between metals and non-metals?

Back

Metals are typically shiny, conductive, and malleable, while non-metals are dull, insulative, and brittle.

Front

What is a metalloid?

Back

An element that has properties of both metals and non-metals.