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Sodium ion is smaller than fluoride ion. Sodium ion and fluoride ion are isoelectronic.They have the same number of electrons. For example, Na+ and F- has 10 electrons.In any isoelectronic series we can list the members in order of increasing atomic number; therefore, nuclear charge increases as we move trhrough the series. Because the number of electrons remains constant, ionic radius decreases with increasing nuclear charge as the electrons are more strongly attracted to the nucleus.
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∙ 12y ago
Praise Okwu
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∙ 14y agoBecause the fluorine ion has an extra electron which is not held as tightly as the other 7 valence electrons. The effective nuclear charge of fluorine is +7, so its' 7 valence electrons are held tightly, but that Zeff is not powerful enough to maintain the small size of fluorine once an electron is added.
Wiki User
∙ 12y agoAlthough fluorine has a larger mass, the general rule for the Periodic Table is, as you move across a period (from left to right) - the size of elements decreases. This is because - elements of the same period have the same number of shells (ie lithium and fluorine both have 2 energy shells). The difference is - as fluorine has more protons - its nucleus has a strong force of attraction and thus - it holds the energy shells more 'tightly' then lithium resulting in a more 'compact' atom (which is smaller).
Wiki User
∙ 14y agoYes! A Fluorine ion has two full shells of electrons while Lithium only has one full shell!
Wiki User
∙ 11y agoFluorine
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What does a fluoride ion have in common with a neon and a sodium ion?
Both fluoride ion and sodium ion are isoelectronic with neon. That means all have 10 electrons.
What is the differences between a sodium ion and fluoride ion?
The sodium ion (Na+) is a cation (positive charge) and the fluoride ion (F-) is an anion (negative charge).
What does a fluoride ion have in common with a neon ion and a sodium ion?
The Fluoride ion, neon atom, and sodium ion all have the same electron configuration and known as ISO-ELECTRONIC ions.
What does a fluoride ion have in common with a neon atom and a sodium ion?
what does an atom have in common with an ion?
What is larger radius a sodium ion or chloride ion?
A chloride ion has a larger radius than a sodium ion, because the chloride has an additional complete valence shell of electrons compared to a sodium ion, but a sodium atom has lost the only electron in this valence shell that the sodium atom ever included to form a sodium ion.
Why is fluoride ion larger than the fluoride atom?
Because it has an extra electron
What does a fluoride ion have in common with a neon and a sodium ion?
Both fluoride ion and sodium ion are isoelectronic with neon. That means all have 10 electrons.
What is the differences between a sodium ion and fluoride ion?
The sodium ion (Na+) is a cation (positive charge) and the fluoride ion (F-) is an anion (negative charge).
Why is nitrogen ion larger than fluoride ion?
The nitride ion has a larger negative charge than the fluoride ion and a smaller positive charge in its nucleus, which means a greater repulsion within the electron shells and a lesser attraction to the nucleus.
What does a fluoride ion have in common with a neon ion and a sodium ion?
The Fluoride ion, neon atom, and sodium ion all have the same electron configuration and known as ISO-ELECTRONIC ions.
Is a fluoride ion easyer to pull away from a sodium ion?
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Why is calcium fluoride have a smaller boiling point then magnesium fluoride?
The calcium ion is larger than the magnesium ion and so the charge on it is less dense. This makes it less attracted to the fluoride ions
What does a fluoride ion have in common with a neon atom and a sodium ion?
what does an atom have in common with an ion?
What is larger radius a sodium ion or chloride ion?
A chloride ion has a larger radius than a sodium ion, because the chloride has an additional complete valence shell of electrons compared to a sodium ion, but a sodium atom has lost the only electron in this valence shell that the sodium atom ever included to form a sodium ion.
What does a fluoride ion have in common with a neon atom and a sodium atom?
what does an atom have in common with an ion?
Why is their sodium fluoride in toothpaste?
The hydroxyapatite in your teeth reacts with sodium fluoride to form fluoroapatite. Because of the fluoride ion, it has a far lower solubility in strong acids than hydroxyapatite, preventing tooth decay. This is the reason for fluoridation of water supplies and toothpaste.
Does fluoride have metal in its formula?
Fluoride itself is just the ion of the nonmetal fluorine. To form a substance it must be combined with a positive ion. In most cases, but not all, this positive ion is a metal. In most dental products contain sodium fluoride, sodium being a metal. Fluoride is sometimes confused with the mineral fluorite, which is calcium fluoride. Calcium is also a metal.
