Ion

Which of these statements about a negative ion is true?

• It has an equal number of protons and electrons.

• It has more protons that electrons

• It has more electrons than protons

Bromine is in Group 7 of the periodic table. What is the charge on its ions?

• -1

• -2

• 1

A magnesium ion has the formula Mg²⁺. What is its electronic structure?

• 2,8,4

• 2,8,2

• 2,8

An ion has the formula Ba²⁺. What group of the periodic table is its element in?

• 1

• 2

• 6

Sulphur is in group 6 of the periodic table. What is the formula of its ion?

• S^-6

• S⁺⁶

• S^-2

A fluorine atom has 9 electrons in total. What would the electron configuration of a fluorine ION be?

• 2,7

• 2,6

• 2,8

Calcium ions form an ion with __________ charge.

• -1

• +1

• +2

• -2

A positively charged ion is called a(n)

• cation

• anion

• lithium

• positron

Chemical bonds form by the attraction between ______.

• the charged ends of polar molecules

• positive ions and negative ions

• the nucleus of one atom and the electrons of another atom

• an atom and its own electrons

A positive ion forms when an atom ______.

• loses one or more valence electrons in order to transform into a stable noble gas

• loses one or more valence electrons in order to attain a noble gas configuration

• gains one or more valence electrons in order to attain a noble gas configuration

• loses or gains valence electrons in order to attain a noble gas configuration