Periodic Table Trends

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

• Increase

• Decrease

• Stay the same

• Nothing

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)

Tags

NGSS.HS-PS1-1

Which element is most likely to have six electrons in its 4th energy level?

• Oxygen (O)

• Selenium (Se)

• Krypton (Kr)

• Potassium (K)

Tags

NGSS.HS-PS1-1

In which group would an element that is very reactive most likely be located?

• 1

• 5

• 15

• 18

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following elements is most likely a metal?

• W

• X

• Y

• Z

Tags

NGSS.HS-PS1-1

Which of the following elements is most likely a metalloid?

• W

• X

• Y

• Z

Tags

NGSS.HS-PS1-1

What is the atomic mass of an element with 16 protons, 13 neutrons, and 16 electrons?

• 13 amu

• 16 amu

• 29 amu

• 45 amu

Tags

NGSS.MS-PS1-1

Is silicon a metal, nonmetal or metalloid?

• Metal
• NonMetal
• Metalloid

Tags

NGSS.HS-PS1-1

Sodium (Na) and potassium (K) are in the same group on the periodic table. Based on their locations, which statement about sodium and potassium is true?

• Sodium is less electronegative than potassium. 
• Sodium has fewer energy levels than potassium. 
• Sodium has a larger ionic radius than potassium. 
• Sodium has lower ionization energy than potassium. 

Tags

NGSS.HS-PS1-1

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.