Report an Error. Example Question 12 : Periodic Trends. Possible Answers: Ionization energy. Correct answer: Atomic radius. Explanation : Atomic radius decreases as one moves across the periodic table from left to right, since effective nuclear charge increases and the electrons are held more tightly to the nucleus. Example Question 13 : Periodic Trends. Which of the following has the highest effective nuclear charge? Correct answer: Cl.
Explanation : Effective nuclear charge increases as one moves across a period row from left to right, so Cl will have a higher effective nuclear charge.
Example Question 14 : Periodic Trends. Which of the following elements is the least electronegative? Possible Answers: S. Correct answer: Cs. Explanation : Electronegativity increases as one moves left to right across the periodic table, it also increases as one moves up the periodic table. Example Question 15 : Periodic Trends.
Which of the following has the greatest ionization energy? Possible Answers: F. Correct answer: F. Explanation : Ionization energy goes up across the period and down as you go down the group.
Example Question 16 : Periodic Trends. Possible Answers: Cs. Correct answer: He. Explanation : Helium has the smallest atomic radius. Example Question 17 : Periodic Trends. Explanation : The periodic table allows you to follow general guidelines or "trends" that are displayed on the table.
Example Question 18 : Periodic Trends. Why does fluorine have a smaller atomic radius than carbon? Possible Answers: Fluorine is farther down the group than carbon. Fluorine has more charged particles attracting the electron cloud to the nucleus. Halogens have a larger atomic radius than carbon. Correct answer: Fluorine has more charged particles attracting the electron cloud to the nucleus. Explanation : Atomic radius decreases as you move left to right on the periodic table.
Example Question 19 : Periodic Trends. Possible Answers: As and Se. Correct answer: Na and Cl. Explanation : The atomic radius of elements decreases as one moves from left to right across the periodic table. Example Question 20 : Periodic Trends. Which of the following atoms has the largest atomic radius? Possible Answers: Oxygen. Correct answer: Sulfur. Explanation : When predicting how atomic radius will change as you move along the periodic table, remember these two trends.
For example, balloons are typically filled with helium, not hydrogen, because helium is much more stable and therefore less flammable and safer to use.
You can also use atomic radii to estimate how reactive different elements will be. Atoms with smaller radii are more reactive than atoms with larger radii. The halogens in group 17 have the smallest average radii in the periodic table. Fluorine has the smallest atomic radius of the halogens which makes sense based on the trends , and that makes it highly reactive.
Just adding fluorine to water will produce flames as the fluorine turns into a gas. The first atomic radius periodic trend is that atomic radii increase as you move downwards in a group.
This is due to electron shielding. You can use this information to better understand the periodic table, how atoms bond, and why certain elements are more reactive than others. Need to brush up on your molecular chemistry? Review the different kinds of hydrates , how electronegativity works , and the uses and limitations of the Bohr Atomic Model.
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How to Get a Perfect , by a Perfect Scorer. Score on SAT Math. Score on SAT Reading. Score on SAT Writing. What ACT target score should you be aiming for? How to Get a Perfect 4. How to Write an Amazing College Essay. A Comprehensive Guide. Choose Your Test. Q: Which atom has larger atomic radius Rb or Xe?
Write your answer Related questions. What atomic radius is larger Rb or Sr? Which element has the larger atomic radius Li or Rb? What is the atomic radius of Rb? Out of Li K Na Rb which has the smallest atomic radius? Smallest to largest atomic radius PotassiumMagnesiumCalciumRubidium? Which has the smallest radius K Rb K Rb?
Which family has the largest atomic radii? Is the ion RB plus larger or smaller than the neutral atom? What is the atomic weight of Rb? How many neurons are in an atom of 82 Rb?
Why does Rb have a greater atomic radius than K? Is rubidum form the positive ion Rb plus is this ion larger or smaller than the neutral atom. Which has a larger ionic radius a strontium ion or a rubidium ion? What elements have a smaller atomic radius than strontium? Which element has the largest radius Rb 37 or Xe 54?
Which one has a greater atomic size Li or Rb? What is the chemical symbol of rubidium? Which of the following has the smallest radius is K plus Rb Rb plus K? Which element is the largest K Rb Na Li? How many protons does the element RB have?
What is the atomic mass of Rb? Where are atoms with the largest and smallest atomic radii found? Rank these elements according to atomic radius. Study Guides. Trending Questions. Still have questions? Find more answers.
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