Question

Name the following ionic compounds: (a) K2Cr2O7, (b) Li2C2O4, (c) CuNO3.

Answer 1

The ionic compounds K2Cr2O7, Li2C2O4, and CuNO3 are named potassium dichromate, lithium oxalate, and copper(I) nitrate respectively, with CuNO3 typically being a typo for more commonly known Cu(NO3)2.

Step-by-step explanation:

To name the following ionic compounds:

• (a) K2Cr2O7 is known as potassium dichromate.
• (b) Li2C2O4 is referred to as lithium oxalate.
• (c) CuNO3 would typically be copper(I) nitrate, but as copper nitrate is more commonly seen as Cu(NO3)2 in its copper(II) form, this could be a typo. Assuming no typo, copper(I) nitrate is correct, though it's rarely isolated as a stable compound.

Naming ionic compounds involves combining the name of the cation, usually the metal, with the name of the anion, typically a non-metal or polyatomic ion. If there is more than one common ionic form of an element, then a roman numeral is used to indicate the charge on the cation.

Answer 2

(a) The name of
`K_2Cr_2O_7` is, potassium dichromate.

(b) The name of
`Li_2C_2O_4` is, lithium oxalate.

(c) The name of
`CuNO_3` is, copper nitrate.

Step-by-step explanation:

Ionic compound : It is a type of compound that is made up of the ions of the two different elements in which one element is a metal and another element is a non-metal.

(a)
`K_2Cr_2O_7`

The given compound
`K_2Cr_2O_7` is an ionic compound. It is made up of two different ions which are potassium ion
`(K^+)` and dichromate ion
`(Cr_2O_7^(2-))`.

So, the name of
`K_2Cr_2O_7` is, potassium dichromate.

(b)
`Li_2C_2O_4`

The given compound
`Li_2C_2O_4` is an ionic compound. It is made up of two different ions which are lithium ion
`(Li^+)` and oxalate ion
`(C_2O_4^(2-))`.

So, the name of
`Li_2C_2O_4` is, lithium oxalate.

(c)
`CuNO_3`

The given compound
`CuNO_3` is an ionic compound. It is made up of two different ions which are copper ion
`(Cu^+)` and nitrate ion
`(NO_3^(-))`.

So, the name of
`CuNO_3` is, copper nitrate.