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Periodic Table of Elements & Atomic Stucture

Name
Across
This element makes up bones in humans
This family contains the rare earth elements
This element is used in batteries and to treat bi-polar disorders
This family of elements are the most stable elements because their outer electron cloud has the maximum number of electrons
The family that contains the most elements
At standard conditions this family spans all 3 physical states of matter; solid, liquid & gas
Its atomic number is 74
A proton has this electrical charge
This element is the foundation of life
Its made of protons and neutrons
This element makes up 21% of the atmosphere
Down
The origin of of Hydrogen, Helium & Lithium
It determines how an element bonds with other elements
This family include the most reactive elements that have 1 electron in their outer cloud
The vertical rows in the periodic table
This element is named from Greek mythology the first sons of the Earth, Greek Supermen.
An element is determined by the number it has.
This element is named after the country of Marie Curie the only person to win a Noble Prize in Chemistry & Physics
This element is named after the discoverer of the Periodic table
This element is named after Japan
An atom that has a different number of neutrons is called...
Sand is made of this element
This element is a liquid at standard conditions
This element is part of human hemoglobin
The horizontal row in the Periodic table