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100

the electrical property of an atom or ion

Charge

100

consists of electrically positive protons and electrically neutral neutrons. 

Nucleus

100

Horizontal rows 

Period

100

a three dimensional description of the most likely location of and electron around an atom. 

Orbital

100

number of protons and neutrons

Mass Number

200

Any atom or group of atoms that has one or more positive or negative electrical charges.

Ion

200

various chemical elements that have valence electrons

Transitional Metal
200

A neutral particle in the nucleus

Neutron

200

any class of substances characterized by high electrical and thermal conductivity. 

Metal

200

Smallest unit of matter

Atom

300

Positively charged particle 

Proton

300

the number of a chemical element 

Atomic number

300

14 metallic chemical elements with atomic numbers 57-70.

Lanthanoids

300

Vertical columns 

Group

300

highly metallic elements that have two valence electrons

Alkaline Earth Metals

400

a series of metallic elements who atomic numbers start from 89-103

Actinoids

400

the quantity of matter contained in an atom of an element 

Atomic mass

400

the positive or negative electrical charge of an atom.

Ionic charge

400

A chemical element that exhibits some metal and some non-metal properties

Metalloid

400

A table of chemical elements.

Periodic table of elements

500

The region of negative charge surrounding an atomic nucleus

Electron Cloud

500

those who lack all the metallic attributes


Non-metal

500

any of the strongly basic metals that have one valence electron

Alkali Metal

500

Negative charged particle

Electron
500
A gaseous chemical element that does not readily enter into chemical combination with other elements

Noble Gas

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