Periodic Table Trends

The Periodic Table of the Elements is useful for revealing patterns and trends in the elements. Which statement accurately describes a pattern in the size of atomic radii in the Periodic Table of the Elements?

• Atomic radii decrease from left to right across a period and decrease from top to bottom in a group.

• Atomic radii increase from left to right across a period and increase from top to bottom in a group.

• Atomic radii decrease from left to right across a period and increase from top to bottom in a group.

• Atomic radii increase from left to right across a period and decrease from top to bottom in a group.

The symbols W, X, Y, and Z represent four elements shown on the outline of a periodic table.
Which element has the highest electronegativity?

• W

• X

• Y

• Z

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Fluorine, chlorine, bromine, and iodine all have the same number of valence electrons and have a tendency to gain electrons. Which element has the greatest ionization energy and electronegativity?

• fluorine

• chlorine 

• bromine 

• iodine 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What happens to the atomic numbers as you move from left to right on the periodic table?

• Increase

• Decrease

• Stay the same

• Nothing

Which element has the highest electronegativity?

• Oxygen

• Fluorine

• Chlorine

• Nitrogen

Tags

NGSS.HS-PS1-2

Which of the following statements is true about the periodic table?

• Elements in the same period have similar chemical properties.

• Elements in the same group have the same number of valence electrons.

• Elements in the same group have the same atomic number.

• Elements in the same period have the same number of valence electrons.

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DOK Level 1: Recall

Which property CANNOT be predicted from the position of an element in the periodic table?

• electronegativity

• density

• Number of protons

• atomic radius (size)

Which of the following elements is most likely to have similar properties to those of sodium (Na)?

• Magnesium (Mg)

• Sulfur (S)

• Francium (Fr)

• Titanium (Ti)

Elements in the same column of the periodic table always have the same # of _______ as one another.

• Protons

• Neutrons

• Electrons

• Valence Electrons

Select the element with the largest atomic radius

• Potassium

• Scandium

• Gallium

• Arsenic