The number of electrons is 9.
An oxygen anion has 10 electrons, because it gains two electrons to achieve a full valence shell of 8 electrons.
The anion of OCl (hypochlorite ion) has 8 valence electrons. This is because oxygen contributes 6 valence electrons and chlorine contributes 7 valence electrons. The overall negative charge of the anion adds one more electron, totaling 8 valence electrons.
A bromine anion has 8 valence electrons. This is because bromine, with 7 valence electrons, gains one extra electron when it forms an anion to achieve a full octet and become stable.
A bromine anion (Br-) contains 8 valence electrons. Bromine is in group 7A of the periodic table and has 7 valence electrons. When it gains an extra electron to form an anion, it now has a total of 8 valence electrons.
One example of such a compound is aluminum oxide (Al2O3). The aluminum ion (Al3+) has three electrons, while the oxygen ion (O2-) has six electrons. This fulfills the criteria of an ionic compound with two ions per formula unit, where the anion (oxygen) has three times as many electrons as the cation (aluminum).
The number of electrons is 18.
An oxygen anion has 10 electrons, because it gains two electrons to achieve a full valence shell of 8 electrons.
Chloride anion has 8 valence electrons.
The anion of OCl (hypochlorite ion) has 8 valence electrons. This is because oxygen contributes 6 valence electrons and chlorine contributes 7 valence electrons. The overall negative charge of the anion adds one more electron, totaling 8 valence electrons.
A -2 anion indicates that the ion has gained two extra electrons. Since there are 8 protons in the nucleus (8 electrons in a neutral atom), adding two extra electrons would give a total of 10 electrons in the anion.
A bromine anion has 8 valence electrons. This is because bromine, with 7 valence electrons, gains one extra electron when it forms an anion to achieve a full octet and become stable.
Oxygen gains 2 electrons when forming an ion. This is because oxygen typically forms an anion by gaining 2 electrons to achieve a stable, full outer electron shell similar to the nearest noble gas configuration.
A chlorine anion has gained one electron, resulting in a total of 18 electrons. A neutral chlorine atom has 17 electrons, but gaining one electron makes it negatively charged, with a total of 18 electrons in the anion.
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A bromine anion (Br-) contains 8 valence electrons. Bromine is in group 7A of the periodic table and has 7 valence electrons. When it gains an extra electron to form an anion, it now has a total of 8 valence electrons.
16 (from its own) + 2 (from the charged ion) = 18 electrons
One example of such a compound is aluminum oxide (Al2O3). The aluminum ion (Al3+) has three electrons, while the oxygen ion (O2-) has six electrons. This fulfills the criteria of an ionic compound with two ions per formula unit, where the anion (oxygen) has three times as many electrons as the cation (aluminum).