Which atom or ion has the smallest radius?
As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.
Which ions have the smallest radius?
Because K + has the greatest nuclear charge (Z = 19), its radius is smallest, and S 2− with Z = 16 has the largest radius.
Which of the following ion has the smallest ionic radius?
Hence Li+,B3+ are smaller than N3− and O2−. Among Li+ & B3+, B3+ is smaller as it has higher nuclear charge due to which its size is reduce as electrons are strongly attracted. Hence among given options, B3+ is smallest.
Which of the following atoms has the smallest radius?
Helium has the smallest atomic radius.
Which ion has the largest radius?
1 Answer. Ernest Z. K+ has the largest radius.
Which ion is the smallest?
More the nuclear charge on ion, electrons are more strongly attracted and thus size decreases. Hence, among the given ions Al3+ is the smallest ion.
Is K+ or Ca2+ bigger?
(d) K+ is larger than Ca2+ Isoelectronic; Ca2+ has more protons to pull e- inward.
Is K+ bigger than K?
The cation of K+ is formed when K loses this outermost single electron to attain “electronic configuration” of: The K+ ion has its outermost electrons on the third energy level now and is size is smaller than that of K ion. Hence, K is larger than K+.
What is the ionic radius of K+?
280 pm
Which element in Group 2 has the largest radius?
Trends in Atomic Radius of Group 2 Elements
| name | atomic radius (pm) | Trend |
|---|---|---|
| magnesium | 160 | ↓ |
| calcium | 197 | ↓ |
| strontium | 215 | ↓ |
| barium | 217 | largest |
Which one of the following is correct order of ionic size?
Correct order of ionic size is Sn>Ce>Lu>Yb.
Which of the following atoms has the largest radius?
So Cesium has the largest atomic radius among the given elements.
Which of the following atoms has the largest atomic radius *?
Answer : The Atom with the greatest atomic radius is chlorine. Fluorine can be ruled out because it is in the same period as oxygen and further to the right down the period. Chlorine has the largest atomic size because it is farthest down the group of any of the above elements listed.
Which element has the largest atomic number?
Oganesson has the highest atomic number and highest atomic mass of all known elements. The radioactive oganesson atom is very unstable, and since 2005, only five (possibly six) atoms of the isotope oganesson-294 have been detected.