answersLogoWhite

0


Best Answer

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.

User Avatar

Wiki User

7y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How many electrons are gained or lost when selenium forms an ion?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How many electrons must be gained or lost for selenium to achieve a noble gas electron configuration?

Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.


What type of compound forms covalent bonds?

ions. (atoms that have lost or gained electrons)


What type of chemical bond forms when atoms that have gained or lost electrons are held together by magnetic attraction?

an ionic bond forms


Which takes place during a redox reaction?

Electrons are both gained and lost. Electrons are both gained and lost.


What forms when an atom has lost or gained electrons?

When an atom looses an electron is called "a cation, when gains is called an "anion".


What is gained in a chemical reaction?

Electrons are the ones gained or lost in a chemical reaction. Electrons are gained in oxidation and lost through the chemical reaction known as reduction.


How many electrons are gained or lost when sulfur forms an ionic bond?

some are made losing lots of yams did you know that


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


An atom that has gained an electron is?

An atom that has gained an electron becomes a negatively charged ion.


When electrons cannot be gained or lost they are?

Shared


Silicon how many electrons are gained or lost?

it has gain 4 electrons


How many electrons are gained when going from Al to Al3 plus?

-3 electrons are gained,i.e,3 electrons are lost by Al and 3 electrons are gained by the other atom nearby.