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Atoms and Periodic Table Review - Rubley Copy

Horizontales
This number tells you the total number of protons in the nucleus
This is the only nonmetal element among the metals of the periodic table
This refers to different forms of the same element that are identified by their neutron count
Members of the Alkaline Earth Metals all have this many valence electrons
This element has 2 energy levels and 7 valence electrons
This refers to the number of electrons in the outermost energy level of an atom
This is the number of protons in carbon-14, an unstable isotope of carbon
This is the only family on the periodic table that is considered to be chemically stable
What two parts of an atom are found in the nucleus?
The charge of a proton
This element is one of the six common semiconductors. It's light weight makes it ideal for computer motherboards.
This is the most common type of element on the periodic table
In the Bohr model of the atom, the second energy level can hold _______ electrons
This number is the sum total of protons and neutrons in the nucleus
Elements in the same ______ share the same number of valence electrons
Verticales
Sulfur is a member of this family
Elements in the carbon family have this many valence electrons
Silicon and boron are both examples of this type of element
This element has 3 energy levels and 3 valence electrons
This is the largest family on the periodic table
This is the number of neutrons in carbon-14, an unstable isotope of carbon
Because they have only one valence electron, this family is the most reactive group of metals on the periodic table
This element has 3 energy levels and 2 valence electrons
The charge of an electron
Fluorine and chlorine are both members of this family
This element is the only member of the noble gases to not have 8 valence electrons but still be full in its out energy level
The charge of a neutron
The _______ that an element is in will tell you how many energy levels it has