I have the following homework problem
"An ionic compound with isoelectronic anions and cations. (Isoelectronic means the same number of electrons.) The anion is formed by the most electronegative element. Crest and Colgate toothpaste contain this chemical.
Write the chemical formula and the name of the compound.
What common product(s) is the compound found in?
Use the following website as a reference: http://www.saveyoursmile.com/toothpaste/toothpaste-c.html "
Fluoride is the most electronegative, but I don't know which one (sodium monofluorophosphate, stannous fluoride, or sodium fluoride) has isoelectronic anions and cations. Thanks
2007-03-10 04:39:18 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Sodium fluoride is the compound.
Na has 11 e-. It loses 1 e- to become Na 1+ (now has 10 e-)
F has 9 e-. It gains 1 e- to become F 1- (now has 10 e-)
The ionic formula is: Na 1+, F 1-
NaF
2007-03-10 04:43:32 · answer #1 · answered by physandchemteach 7 · 0⤊ 0⤋
a sodium atom contains 11 electrons and a sodium ion contains 10 electrons
the fluorine atom contains 9 electrons and the fluoride ion contains 10 electrons
the compound is sodium fluoride, NaF
2007-03-10 04:58:55 · answer #2 · answered by chem geek 4 · 0⤊ 0⤋
sodium floride has the isoelectronic anions and cations
2007-03-10 06:02:11 · answer #3 · answered by blueboy3056 3 · 0⤊ 0⤋