Periodic Table 1
The electrons in the outer energy level
Valence electrons
What sub-atomic particle has a negative charge?
An electron
The sub-atomic particle with a neutral charge
Neutron
An atom with a positive charge.
Proton
How many electrons fit into the first electron shell?
2
The location of protons and neutrons.
Nucleus
An atom with a completely full outer most (valence) energy level is this.
Nonreactive
Tiny particles that make up all matter.
Atoms
Found in a zigzag line on the periodic table.
Metalloids
Least reactive element in period 3
Argon
Atomic mass
Number of protons in the nucleus
8
What is the maximum number of electrons the 2nd orbital, or energy shell, can hold?
Rows on the periodic table
Periods
Columns on a periodic table
Groups
Elements in the same group share this.
What are the same number of valence electrons
Atomic mass
Number of protons and neutrons in the nucleus
These are the properties of metals (at least 2).
Conductivity, high melting points, most are solids at room temperature, shiny, ductile, and malleable?
The majority of the elements on the periodic table are this.
Metals
2,8
Neon
The three classes of elements are these.
What are metals, metalloids, and nonmetals?
Most metals at room temperature are this.
What are solids?
The modern periodic table is organized according to this.
Increasing atomic number?
Elements that are extremely reactive
Group 1 elements - alkali metals
The reactivity of an element is dependent on this.
The octet rule- What is the ability of an atom to either completely fill or empty its outer most energy level?
Define the octet rule
An element's ability to gain, lose, or share electrons to fill its outermost shell, typically with 8 electrons