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Chemistry

Across
Region around atomic nucleus
Zinc,cadmium,and mercury
Atoms that contains neither positive of negative charge
Particle with negative electricity
Vertical column in Periodic Table
Ability of an atom to combine with other atoms
Having a surplus of eletronns
Number of protons in the nucleus of an atom
A table in which the chemical elements are arranged in order of increasing atomic number
Structure of atoms
Down
Electrical property of a particle
Outermost layer of electrons
A fixed amount of energy
Found in nucleus no charge
The central region of an atom
The mass of a molecule
A group of elements with similar chemical properties
Horizontal row in the Periodic Table
Found in nucleus has positive charge
The basic unit of a chemical element