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Periodic Table ...(pt2)

Horizontales
Plumbium
The amount of heat required to convert a solid at its melting point into a liquid without an increase in temperature
Potassium
The breaking down of atoms and the emission of sub atomic particles in order to reach a stable state
The strongest electron bond
Verticales
discovered the concept of radioactive half-life, the radioactive element radon, and differentiated and named alpha and beta radiation.
two or more types of atoms that have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), and that differ in nucleon numbers (mass numbers) due to different numbers of neutrons in their nuclei.
1 or 2 letter abbreviation for an element
The most common electron bond
Auric
Sodium
A stronger electron bond involving two electron pairs.