Atomic Radius Trend

Which of the following statements is true about the atomic radius of elements in the same period?

• It increases from left to right

• It decreases from left to right

• It remains constant

• It increases and then decreases

Tags

NGSS.HS-PS1-1

What is the primary reason for the increase in atomic radius as you move down a group?

• Increase in nuclear charge

• Increase in electron shielding

• Decrease in electron shielding

• Decrease in nuclear charge

How does the shielding effect change as you move down a group in the periodic table?

• It decreases

• It increases

• It remains constant

• It fluctuates

What happens to the atomic radius when an atom loses an electron to form a cation?

• It increases

• It decreases

• It remains the same

• It becomes zero

Atomic radius ________ as you move from top to bottom in a family

• increases

• decreases

• doubles

• stays the same

Atomic radius generally ______ from left to right as atomic number ___________

• increase/ increases

• decreases/ decreases

• decreases/increases

• increases/decreases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

____________ determines the atomic radius for an atom

• protons cloud size

• electron cloud size

• neutron cloud size

• positron cloud size

use the periodic table image to arrange the element atomic size from largest to smallest

• Rb, Li, Fr

• Fr, Rb, Li

• Li, Fr, Rb

• Li, Rb, Fr

Tags

NGSS.HS-PS1-1

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

What is the order of decreasing atomic radius?

• sulfur, chlorine, silicon

• sulfur, silicon, chlorine

• silicon, chlorine, sulfur

• chlorine, silicon, sulfur

• silicon, sulfur, chlorine

Answer explanation

The atomic radius decreases across a period from left to right.