Atomic Structure
The electron has a _______ charge.
Negative charge.
This is potassium's atomic symbol.
K
What are periods?
Periods are the rows in the periodic table. For example, atomic numbers 11 through 18.
How many electrons does Carbon-13 have?
It has 6 electrons.
Which element is in Period 3, Group 17?
Chlorine
The three subatomic particles are...
Protons, neutrons, and electrons.
This is potassium's atomic number.
19
What are groups?
Groups are the columns. Also known as families. For example, F, Cl, Br, I, and At.
How many protons does Carbon-13 have?
It has 6 protons.
The majority of elements on the periodic table are metals, metalloids, or non metals?
METALS
The atom is made up of mostly...?
Space.
This is calcium's average atomic mass.
40.078 amu
What is the family name for Group 1?
Alkali Metals
How many neutrons does Carbon-13 have?
It has 7 neutrons (atomic mass-atomic number).
Which element is in period 5, group 6
Technetium
The nucleus has what two subatomic particles?
Neutrons and protons.
How many electrons and protons does Nitrogen have?
7 protons and 7 electrons
What is the family name for Group 17?
Halogens.
How many neutrons does Sodium-24 (Na-12) have?
It has 12 neutrons (Atomic Mass - Atomic Number).
What is the element name of Au?
G O L D
How do you calculate how many neutrons are in the nucleus>
Atomic Mass - Atomic Number = Neutrons
This is how many neutrons sodium has.
Sodium has 12 neutrons in the nucleus.
Which family is most reactive?
Alkali Metals
How many neutrons does Li-8 have?
It has 5 neutrons (Atomic Mass - Atomic Number).
Which noble gas is in period 4?
Kr ... Krypton