What period is Copper in? (Cu)
4
Each time you go across a period, an atom gains a what?
a proton
On the periodic table, what do periods represent?
Each period indicates how many energy rings/shells an atom has.
An atom’s mass number is 210 and its atomic number is 85. How many neutrons does the atom have?
125
What is the mass number of Carbon-14?
14
What is sodium's atomic number?

11.
What particles surround the nucleus?
Electrons
What is atomic mass?
Number of protons and neutrons added together
How is the Periodic Table organized?
By increasing atomic number.
What is an atom?
The simplest form of an element.
Contains neutrons, protons, electrons.
The largest of the 3 main groups in the Periodic Table is the _________ group.
metals
Electrons have this charge
negative
What are the names of the 3 main groups in the Periodic Table?
metals, non-metals, and metalloids
How many elements are located on the Periodic Table?
118 .
What particles are found in the nucleus.
protons, neutrons
What is the element symbol for potassium?
K
What is the smallest element on the periodic table?
Hydrogen
Protons have this charge
Positive
What is an isotope?
Atoms of the same element with different mass numbers.
What are the 3 parts of an atom?
protons, electrons, and neutrons
What has the symbol Ne?
Neon
What period is Lanthanum in?
6
How many neutrons does neutrons does Oxygen-18 have?
10 neutrons
What does the Atomic Number represent?
The number of Protons contained in atoms of a specific element.
What is the atomic mass of Gold.
197.0
What type of element is Hydrogen?
Non metal
Which group has members like Li, Rb, K, and Fr?
Group 1
Which group has elements like Xe, Ar, He, and Rn?
Group 18 the Noble Gases
What group is Tungsten in (W)?
6
What is the charge of the nucleus?
Positive