Question

What are monovalent , divalent and trivalent elements ? Give three examples each

Answer 1

Answer:

Generally, up to a total of three electrons can be transferred in this way forming Monovalent, Divalent and Trivalent ions. Positively charged ions are known as Cations and negatively charged ions are known as Anions. Therefore, Al3+ is a trivalent cation and S2- is a divalent ion.

Answer 2

a) elements with valency one are called monovalent

examples : sodium , potassium, lithium, ....

b) elements with valency 2 are called divalent

examples : magnesium , berilium, calcium ,...

c) elements with valency 3 are called trivalent

examples : aluminium, boron , gallium

( valency is the combining capacity of an element)