Cation/Anion

Multiple Choice

How many electrons does an atom typically gain when forming an anion?

• enough electrons to achieve the electron configuration of a noble gas

• enough electrons to fill the outer p sublevel

• . usually one electron

• both b and c

Multiple Select

Choose the examples for anions with names, charges and chemical symbols.

• Oxide, O 2−

• Barium, Ba +2

• Chloride, Cl −

• Bromide, Br −

Multiple Choice

What is an anion?

• an atom that has gained one or more protons to become positively charged

• an atom that has gained one or more electrons to become negatively charged

• an atom that has lost one or more electrons to become positively charged

• an atom that has lost one or more protons to become negatively charged

Multiple Choice

Cations can be formed by _____ electrons.

• Gaining

• Losing

• Sharing

• None of the above

Multiple Choice

The most stable ion formed by aluminum, a member of 3A family, is _____.

• −1

• +3

• −3

• +1

Multiple Choice

A beryllium atom becomes a beryllium ion by losing two electrons. What is the symbol for the beryllium ion

• 2Be

• 2Be+

• Be²

• Be²⁺

Multiple Choice

In Mg2+ , the number of electrons is ___ .

• 11

• 12

• 10

• 14

Multiple Choice

When an atom gains or loses a number of electrons, it becomes a charged particle generally known as a(n)

• Ion

• proton

• neutron

• charge