Do note that elements form anions to gain stability (duplet and octet rules).
Neon is a noble gas. It is inert, as its valence shell is full (and follows the octet rule). It does not need to form an anion, as it is already 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.
An oxygen anion with a charge of -2 has 10 electrons. Oxygen normally has 8 electrons, but an anion with a -2 charge gains two additional electrons.
An oxygen anion has 10 electrons, because it gains two electrons to achieve a full valence shell of 8 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.
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 (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.
Chloride anion has 8 valence electrons.
An oxygen anion with a charge of -2 has 10 electrons. Oxygen normally has 8 electrons, but an anion with a -2 charge gains two additional electrons.
An oxygen anion has 10 electrons, because it gains two electrons to achieve a full valence shell of 8 electrons.
The number of electrons is 18.
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.
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.
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.
An iodine atom gains one electron to form an I^- anion. This is because iodine, with 53 protons, typically has 53 electrons to maintain a neutral charge. By gaining one additional electron, it achieves a full outer electron shell and becomes negatively charged.
16 (from its own) + 2 (from the charged ion) = 18 electrons
The anion of chloride (Cl⁻) has 18 electrons, as it has gained one electron to achieve a stable electron configuration. Chloride has 17 electrons in its neutral state, but when it gains an electron, it becomes Cl⁻ with 18 electrons.