Periodic Table Periods

Elements within the same period (row) have the same number of...

• Orbitals

• Valence electrons

• Electrons

• Protons

What are the horizontal rows (left and right) in the periodic table called?

• Families

• Groups

• Periods

• Orbitals

As you go left to right within the same period (row) which of the following is true? (Select all that apply)

• The atomic number increases by one

• The ionization energy increases

• The size of the atom decreases

• The number of orbitals increases by one

• The number of electrons decreases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following elements is in period 6?

• I (Iodine)

• H (Hydrogen)

• Ca (Calcium)

• Cs (Cesium)

Elements within the same period (row) are ordered in increasing atomic number. Which element has the same number of orbitals as the Halogen Bromine (Br)?

• Iodine (I)

• Oxygen (O)

• Potassium (K)

• Carbon (C)

Potassium, Calcium, Copper, Arsenic and Krypton are all elements in period 4. How are these elements grouped?

• they have the same atomic number

• they are all metals

• they react in similar ways

• they have the same number of orbitals

• they have the same number of valence electrons

Which of the following elements are in period 3? (Select all that apply)

• Sodium (Na)

• Aluminum (Al)

• Phosphorus (P)

• Radon (Rn)

• Cesium (Cs)

Which of the following elements are in period 6? (Select all that apply)

• Sodium (Na)

• Aluminum (Al)

• Phosphorus (P)

• Radon (Rn)

• Cesium (Cs)

What does the atomic radius measure?

• The distance from the valence orbital to the nucleus

• The distance around the nucleus

• The distance around the entire atom

Where would you find the largest atoms on the periodic table?

• Bottom, left side of the periodic table

• Bottom, right side of the periodic table

• Top, right side of the periodic table

• Top, left side of the periodic table