Which ion or atom has the largest radius mg Na Na+ Mg2+?
Among the isoelectronic ions Na+,Mg2+andAl3+,Na+ ion have the largest size.
Which ion is bigger Na+ or Mg2+?
Explain your answer. mg2+ would be the smaller ion this is because each ion has the same number of electrons however mg2+ has a greater number of protons and therefore is more charge dense and the outer electrons feel a greater pull from the nucleus.
Which of the following has largest size Na Na+ Mg Mg2+?
Thus, the decreasing order of size is written as: Na>Mg> Na+>Mg2+. Therefore, the largest particle is Na. The correct option is C. Note: Don’t get confused between the atomic size and atomic number.
Which has the largest radius mg or Mg2+?
Answer. So Mg atom will be larger as it has more electrons than Mg 2+ and thus will have larger atomic radii.
Which is bigger Na or Na+?
Yes Na+ is smaller than Na because Na+ is formed when an electron is lost from the Na atom,Thus the effective nuclear charge increases bcz the number of protons exceeds the number of electrons . This results in bringing the valence shell a little closer to the nucleus because of a very strong nuclear pull.
Which is bigger Se2 or Br?
The Br− ion is smaller than the Se2− ion because the Br− ion has a larger nuclear charge and more extra electrons than the Se2− ion.
Which ion has the largest atomic radius?
1 Answer. Ernest Z. K+ has the largest radius.
Which is smaller Mg2+ or Al3+?
As you go from Na+ to Mg2+ to Al3+, the number of protons in the nucleus increases and so pulls the outer electrons in more and more. … The smallest ion will be the one with the largest number of protons – Al3+; the biggest, the one with the least protons – N3-.
Which ion is smaller F or Na+?
Na+ has smaller size than F- because both Na+ and F- have equal number of electrons i.e.10 . After losing an electron Na will have less electron cloud and more effective nuclear charge whereas F after gaining an electron will have less effective nuclear charge than the parent atom so the size increases .
Which is bigger Na or Mg Why?
Sodium(Na) is bigger than Magnesium(Mg) because the atomic no. of Na is 11 whereas the atomic number of Magnesium is 12 so the atom of Magnesium shrinks more than sodium .
Which ion has largest size?
Consequently, the ion with the greatest nuclear charge (Al 3 +) is the smallest, and the ion with the smallest nuclear charge (N 3−) is the largest.
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Ionic Radii and Isoelectronic Series.
| Ion | Radius (pm) | Atomic Number |
|---|---|---|
| N 3− | 146 | 7 |
| O 2− | 140 | 8 |
| F − | 133 | 9 |
| Na + | 98 | 11 |
Which is smaller F or F?
F has a smaller radius than F− because an additional electron causes greater repulsion in F− .
Which one has the largest 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.
Why is K bigger than Br?
Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.
What is the radius of mg2+?
Metallic, Covalent and Ionic Radii(r)*
| Atom/Ion | r(pm) |
|---|---|
| Lu3+ | 86 |
| Mg | 160 |
| Mg2+ | 72 |
| Mn | 137 |