Elements & Periodic Table

These are located in the outer energy level of an atom; can be identified by the group number

The group of elements on the zigzag line with characteristics of metals & nonmetals; also semiconductors

A horizontal row of elements in the periodic table.

The properties of elements in a group are often similar due to having the same number of these in the outer shell

The most reactive metals in the Periodic Table are

A vertical column in the periodic table is a

The chemical reactivity tends to ______ from left to right across the Periodic Table

Nonmetals are ________ conductors of heat and electricity

The three main groups of elements are

The basic particle from which all elements are made.

This is another name for energy levels found in the electron cloud of an atom

The sum of protons and neutrons in the nucleus of an atom.

This decreases from left to right on the periodic table

What is the name of the element group 17 known to be the most reactive nonmetals?

Elements in the same vertical column of the periodic table; also called a family

A chart of the elements showing the repeating patterns of their properties.

All nonmetals are to the right of the metalloids with the exception of

An atom with the same number of protons and a different number of neutrons from an atom of the same element

A group of elements that are unreactive

A positively charged particle that identifies an elements atomic #

A majority of the elements on the periodic table are solid at room temperature, malleable, and ductile