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They are lost. If it has a plus sign beside the ion charge, that means the atom loses electrons. But if it has a negative sign for the ion charge, that means that the atom gains electrons.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoThey lose two electrons. If it says +2 that means that it loses two electrons, but if it says -2, it means that that atom gains two electrons.
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How many electrons are gained or lost when selenium forms an ion?
Since Selenium is a Chalcogen (meaning it's in group 6A on the Periodic Table), it gains 2 electrons to form an ion with a charge of -2.
How many electrons must be gained or lost for Mg to attain a noble gas?
It should loose 2 electrons to become a noble gas.
Will electrons be gained or lost if the atom of oxygen becomes stable?
the atomic no of oxygen is 8 to reach the nearest noble gas electronic configuration it excepts 2 electrons and becomes isoelectronic to Neon.
What ion would be formed from oxygen how many electrons would be lost or gained?
Oxygen is in group 6, and so it has 6 valence electrons. It needs to more to make an octet, so it will GAIN TWO electrons, and become negative 2, i.e. O^2-.
When an element loses an electron what happens to the charge of the element?
When "x" valence electrons are lost the charge is +x When "x" valence electrons are gained the charge is -x for example, if chlorine gained one electron, the charge would be Cl 1- or, if magnesium lost two electrons, the charge would be Mg 2+
How many electrons are gained or lost when selenium forms an ion?
Since Selenium is a Chalcogen (meaning it's in group 6A on the Periodic Table), it gains 2 electrons to form an ion with a charge of -2.
What do the oxidation numbers of 2 and -2 imply?
+2 implies that 2 electrons are lost by the element. -2 implies that 2 electrons are gained by the element
What do the oxidation numbers 2 and -2 imply?
+2 implies that 2 electrons are lost by the element. -2 implies that 2 electrons are gained by the element
What happens to substance when it is oxidized?
Oxidation is the loss of electrons. Reduction is the gain of electrons. The oxidizing agent is reduced. The reducing agent is oxidized. Cu goes from 0 to +2, it lost electrons S went from +6 to +4, it gained electrons I went from 0 to +5, it lost electrons N went from +5 to +4, it gained electrons.
Indicate the number of electrons lost or gained by calcium and give the charge of the ion it forms?
loses 2 electrons to form a calcium ion with 2+ charge
How many electrons must be gained or lost for Mg to attain a noble gas?
It should loose 2 electrons to become a noble gas.
How many electrons must be gained or lost for calcium to attain a noble gas electron configuration?
Ca needs to lose 2 electrons to become Ca+2
Will electrons be gained or lost if the atom of oxygen becomes stable?
the atomic no of oxygen is 8 to reach the nearest noble gas electronic configuration it excepts 2 electrons and becomes isoelectronic to Neon.
What is the number of electrons that were lost gained to form Mg2 plus?
Mg 2.8.2 likes to lose 2 electrons to become Mg 2.8, when it loses them it becomes an Mg 2+ ion.
What ion would be formed from oxygen how many electrons would be lost or gained?
Oxygen is in group 6, and so it has 6 valence electrons. It needs to more to make an octet, so it will GAIN TWO electrons, and become negative 2, i.e. O^2-.
Electrons gained or lost when forming a ion from xenon?
When Ionizing Xenon you can only loss electrons. A +2 or +1 ion. Incoming electrons have no inclination to stay as all inter-S orbitals are filled.
When an element loses an electron what happens to the charge of the element?
When "x" valence electrons are lost the charge is +x When "x" valence electrons are gained the charge is -x for example, if chlorine gained one electron, the charge would be Cl 1- or, if magnesium lost two electrons, the charge would be Mg 2+
