Br⁻ is larger than Br because the extra electron increases electron repulsion, expanding the electron cloud and making the ion bigger.
Which of the following is larger Br or Br −?
Br⁻ is larger than Br because the extra electron increases electron repulsion, expanding the electron cloud and making the ion bigger.
When bromine snags an extra electron to become Br⁻, that added negative charge shoves the existing electrons apart. The result? A bigger ion. This happens with anions across the board—they always balloon up compared to their neutral selves. Picture trying to cram one more sock into an already stuffed drawer; something’s gotta give. You can read more about ion size trends in this related article.
What is the largest Br?
Francium (Fr) is the largest element on the periodic table, not bromine.
Bromine’s a halogen in period 4, but size trends downward and left on the periodic table. Francium, lurking at the bottom of the alkali metals, takes the crown. It’s like watching a snowball roll downhill—just keeps growing and growing. For more on atomic size comparisons, check out this discussion.
Why does Br have the largest radius?
The bromine atom has one more electron shell than lighter halogens, giving it a larger radius.
As you move down Group 17, each element stacks on another electron shell. Bromine’s in period 4, so it’s got four shells to fluorine’s two. Think of it like upgrading from a cozy bungalow to a sprawling four-story mansion—the more floors, the more space you need. Learn more about periodic trends here.
How can you tell which atom is larger?
Atoms get larger as you go down a group and smaller as you go left to right across a period.
Treat the periodic table like a treasure map. Downward movement adds shells (bigger atoms); left-to-right movement packs electrons tighter (smaller atoms). Helium’s tiny; francium’s enormous. It’s the atomic equivalent of stepping on a scale after Thanksgiving dinner—size changes predictably with position.
Which is larger Br or Se2?
The Se²⁻ ion is larger than the Br⁻ ion despite both having 36 electrons.
The difference comes down to nuclear charge. Selenium’s got 34 protons tugging at 36 electrons, while bromine’s got 35 protons for the same count. Fewer protons mean weaker pull, so Se²⁻’s electron cloud spreads out more. Imagine two identical balloons—one held by a strong magnet (Br⁻) and one by a flimsier magnet (Se²⁻); the weaker magnet lets the balloon stretch.
Which is larger RB or RB+?
Rb is larger than Rb⁺ because losing an electron removes the outermost shell.
Rubidium starts with five shells; Rb⁺ drops to four, shrinking fast. The positive charge also yanks remaining electrons closer, like removing the roof from a house and watching the walls cave inward. Data from the NIST Atomic Spectra Database puts Rb⁺’s metallic radius at about 166 pm versus Rb’s 265 pm. For more on ion sizes, see this article.
Which is larger k or k+?
K is larger than K⁺ because K⁺ loses its outermost electron shell.
Potassium begins life in period 4; K⁺ collapses to period 3, shrinking dramatically. The missing electron also strips away shielding, letting the nucleus grab the remaining electrons tighter. It’s like trimming the sails on a tall ship—suddenly everything fits into a much smaller space.
Which has largest radius?
Francium has the largest atomic radius of all known elements.
Francium sits at the bottom-left corner of the periodic table, combining maximum shells with minimal nuclear pull. Oganesson (element 118) might be heavier, but francium wins the size race. Picture it as the atomic version of a sumo wrestler—big in every direction.
Why is O 2 bigger than O?
O²⁻ is larger than O because extra electrons increase repulsion, expanding the electron cloud.
Slam two extra electrons onto neutral oxygen and watch the chaos unfold. The negative-negative repulsion forces the cloud outward, while the ion’s charge weakens the nucleus’s grip. It’s like inflating a party balloon with helium—suddenly there’s way more room to move. Data from NIST shows O²⁻ at ~140 pm versus O’s ~63 pm.
What has the highest atomic mass?
Oganesson (Og) has the highest atomic mass of all known elements at approximately 294 u.
This synthetic heavyweight lives at the end of period 7 and was confirmed back in 2006. With 118 protons in its nucleus, it’s the undisputed heavyweight champ of the periodic table. Only a handful of atoms have ever been spotted, so its properties remain mostly theoretical.
How do you rank atoms from smallest to largest?
Rank atoms by moving from top-right to bottom-left on the periodic table.
Start with helium in the top-right corner, then slide down each group and across periods toward francium in the bottom-left. Use atomic radii data from PeriodicTable.com to verify the order. Think of it as curating a playlist: the biggest hits always end up in the bottom-left corner.
Is Se2 bigger than Rb+?
No, Rb⁺ is larger than Se²⁻.
Both ions share 36 electrons, but Rb⁺ packs 37 protons while Se²⁻ has only 34. The stronger nuclear charge in Rb⁺ clenches electrons tighter, shrinking the radius. Data from WebElements shows Rb⁺ at ~166 pm versus Se²⁻ at ~198 pm.
Why are Se2 and Br about the same size?
Se²⁻ and Br⁻ are nearly the same size because both have 36 electrons.
Se²⁻ has 34 protons; Br⁻ has 35. That extra proton in Br⁻ pulls electrons slightly closer, balancing out the size difference. It’s like two identical twins—one with a barely noticeable extra weight that doesn’t change their appearance much.
Which is smaller SE or Se2?
The neutral Se atom is smaller than the Se²⁻ ion.
Neutral selenium keeps its electrons on a tighter leash, so the cloud stays compact. Add two electrons to make Se²⁻ and suddenly the cloud inflates dramatically. Data from NIST shows neutral Se at ~103 pm versus Se²⁻ at ~198 pm.
