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Mg2+ is larger
Now, as for the logic behind this problem...The first thing to do is recognize that Ca2+ (Calcium) has lost 2 of its electrons, therefore its valence electron structure is the same as Ar's (Argon).
Ar is in the same row as Mg. The trend for atomic radii is increasing to the left and down. Atomic radius increases to the left because the atoms to the right have more particles in the nucleus than their counterparts to the left; thus, the electrons are drawn closer to the nucleus, and the atomic radius is diminished.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoNo! At least for non-transition elements, cations are almost always substantially smaller than the neutral atoms from which they are derived, because the entire outer electron shell of the neutral atom is lost to form the cation.
Wiki User
∙ 12y agoAll atoms are roughly the same size. Beryllium has an atomic structure of 2,2 so has 2 electron shells, Magnesium has an atomic structure of 2,8,2 so has 3 electron shells and Calcium has an atomic structure of 2,8,8,2 so has 4 electron shells. So in terms of how many shells there are, Calcium is largest.
Wiki User
∙ 7y agoCa^2+ would have a larger atomic radius than Mg^2+.
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When electron transfer results in an ion larger than the original atom?
An atom that has gained one or more electrons, becoming a negative ion, is larger than its parent atom.
Which is larger a sodium atom or sodium ion with a plus 1 charge?
The sodium atom is much bigger than a sodium cation with a plus 1 charge, because the "lost" electron of the ion had a higher principal quantum number than any remaining electron in the ion and therefore was distributed through a larger volume of space than any of the remaining electrons.
Is the size of a positive ion generally bigger or smaller than the size of the neutral form which it forms?
We are working on this in Physical Science class. A negative ion is larger then its parent atom. A positive ion is smaller then its parent atom. =]
What one is larger a chlorine atom or a chloride ion?
anion is always larger than its parent atom
Is a negative ion larger or smaller than its parent atom?
Larger because a negative ion contains more electrons than its parent atom therefore it is larger. A positive ion would be smaller because it has less electrons than its parent atom.
When electron transfer results in an ion larger than the original atom?
An atom that has gained one or more electrons, becoming a negative ion, is larger than its parent atom.
When an atom of chlorine forms an ionic bond with an atom of sodium does the atom of chlorine become an ion with a smaller or larger radius than the atom of chlorine?
It becomes an ion with a larger radius than the atom of chlorine
Which is larger a sodium atom or sodium ion with a plus 1 charge?
The sodium atom is much bigger than a sodium cation with a plus 1 charge, because the "lost" electron of the ion had a higher principal quantum number than any remaining electron in the ion and therefore was distributed through a larger volume of space than any of the remaining electrons.
Is the size of a positive ion generally bigger or smaller than the size of the neutral form which it forms?
We are working on this in Physical Science class. A negative ion is larger then its parent atom. A positive ion is smaller then its parent atom. =]
A negative ion is than its parent atom?
A negative ion is larger than its parent atom because of its additional electron(s).
What one is larger a chlorine atom or a chloride ion?
anion is always larger than its parent atom
Is a negative ion larger or smaller than its parent atom?
Larger because a negative ion contains more electrons than its parent atom therefore it is larger. A positive ion would be smaller because it has less electrons than its parent atom.
Why is the chloride ion larger than the chloride atom?
The chloride ion is an anion, having one more electron than the chlorine atom.
Is halide atom larger than the halide ion?
Yes
Why the radius of an atom larger than the radius a positive ion formed from it?
The positive ion lost an electron.
A Mg atom differs from a Mg2 plus ion in that the Mg atom has?
The Mg atom has more electron than the Mg+2 ion.
Is a sodium atom is larger than a silicon atom?
No. A cesium atom is larger both in terms of atomic mass and atomic radius.
