Q. What noble gas is isoelectronic with O2?
noble gas Neon
Q. What is oxide Isoelectronic with?
Answer Expert Verified A species that is isoelectronic with the oxide ion will have the same electron configuration of electrons as as the oxide ion. 4 species that are isoelectronic with the oxide ion are F^(-), Ne, Na^(+), and Mg^(2+).
Table of Contents
- Q. What noble gas is isoelectronic with O2?
- Q. What is oxide Isoelectronic with?
- Q. What elements are isoelectronic with O2?
- Q. Which is smaller K+ or Ca2+?
- Q. Why is S2 bigger than K+?
- Q. Which is larger Na+ or O2?
- Q. Which has the smallest size Na Na+ Na Cl+?
- Q. Why is Cl bigger than Na+?
- Q. Is mg bigger than na?
- Q. Which is more electropositive Na or MG?
- Q. Which ion has the smallest radius?
Q. What elements are isoelectronic with O2?
Answer: The neutral atom which is isoelectronic with O2 is sulfur (S). Explanation: Atomic number of oxygen is 8.
Q. Which is smaller K+ or Ca2+?
ION RADIUS K+ < Cl- < S2- In this isoelectronic series, more protons means smaller radius. (d) K+ is larger than Ca2+ Isoelectronic; Ca2+ has more protons to pull e- inward.
Q. Why is S2 bigger than K+?
S2− is larger than K+ because the decrease in electron repulsions that accompany addition of an electron causes the electron cloud to expand. S2− is larger than K+ because the two ions are isoelectronic and K+ has the larger Z and Zeff.
Q. Which is larger Na+ or O2?
In other words, Na+ has bigger effective nuclear charge than O2− , which translates to a bigger net positive charge felt by the outermost electrons. This will compress the energy levels a bit and make the ionic radius smaller for the sodium cation. Therefore, the oxide anion will have the larger atomic radius.
Q. Which has the smallest size Na Na+ Na Cl+?
Answer. (d) Cl+ is the correct answer. Atomic size decreases across the period. Thus chlorine will be smaller in size in comparison to sodium.
Q. Why is Cl bigger than Na+?
Na atoms are larger than Cl atoms because the electron cloud of Cl is pulled in more tightly by the increased number of protons in the nucleus. Na+ ions are smaller than Cl- ions because the Na+ ions have electrons in only two energy levels and Cl- ions have electrons in three levels.
Q. Is mg bigger than na?
(i) The sodium ion (Na+) is larger than the magnesium ion (Mg2+) due to two effects.
Q. Which is more electropositive Na or MG?
Ionisation enthalpy of Na is less than than that of Mg, hence Na is more electropositive than Mg.
Q. Which ion has the smallest radius?
Because K+ has the greatest nuclear charge (Z = 19), its radius is smallest, and S2− with Z = 16 has the largest radius. Because selenium is directly below sulfur, we expect the Se2− ion to be even larger than S2−….Ionic Radii and Isoelectronic Series.
| Ion | Radius (pm) | Atomic Number |
|---|---|---|
| N3− | 146 | 7 |
| O2− | 140 | 8 |
| F− | 133 | 9 |
| Na+ | 98 | 11 |
