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Atomic Structure
Periodic Table Basics
Valence electrons
Families
Mixed
100
What particles are found in the nucleus of an atom?
Protons and neutrons
100
What does the atomic number represent?
The number of protons
100
What are the "valence" electrons?
Outermost electrons, in the outer shell
100
Metals make up the majority of the periodic table. (True/False)
True
100
As you go down a group the atomic radius gets ________
Larger
200
What is the charge of a proton?
Positive charge
200
What does the mass number represent?
The number of protons + neutrons in a single atom
200
If i have 1 valence (outer) electrons what group/family do I belong to?
Alkali metals, Group I
200
This family will easily lose one electron in chemical reactions
Alkali metals
200
What name is given to the group of elements with a full outer shell? Hint: they are inert, not reactive
Noble Gases
300
What particles zoom around the outside of the nucleus?
Electrons
300
What name is given to the columns on the Periodic Table?
Groups or Families
300
How many electrons can fit in the first energy level (shell)?
Two
300
Chlorine belongs to the family of halogens. Name another element in this family
fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
300
What metal is used to make salt?
Sodium (sodium chloride , NaCl)
400
What charge do neutrons have?
Neutral, no charge
400
What name is given to the rows on the Periodic Table?
Periods
400
As you go across the Periodic Table from left to right the number of valence electrons _____________
increases
400
Where are the most reactive elements found on the periodic table?
Alkali metals, Group I
400
What is the name of the element with 28 electrons?
Nickel
500
_______ % of an atom's mass is in the nucleus.
99.9%
500
What is the atomic number of Krypton?
36
500
What name is given to the diagram that shows the electrons in their energy shells (or orbits?)
Bohr diagram or model
500
The Non metals are located to the right of which group?
The metalloids
500
What is the difference between Carbon-12 & Carbon-14?
Carbon 14 has 2 more neutrons