Question

Which metal will form a compound with the general formula m2co3 when it combines with a carbonate ion

Answer 1

the answer is Lithium.

Answer 2

The question is incomplete, here is the complete question.

Which metal will form a compound with the general formula
`M_2CO_3` when it combines with a carbonate ion

A. Beryllium

B. Aluminum

C. Calcium

D. Lithium

Answer: The metal that will form the given compound is lithium.

Step-by-step explanation:

We are given:

A general chemical formula of carbonate, which is
`M_2CO_3`

The given compound is an ionic compound.

Carbonate is a polyatomic ion having chemical formula
`CO_3^(2-)`

Metal ion has a charge of +1.

For the given options:

Option A: Beryllium is the 4th element of the periodic table having electronic configuration of
`1s^22s^2`

This element will loose 2 electrons to form
`Be^(2+)` ion.

Option B: Aluminium is the 13th element of the periodic table having electronic configuration of
`1s^22s^22p^63s^23p^1`

This element will loose 3 electrons to form
`Al^(3+)` ion.

Option C: Calcium is the 20th element of the periodic table having electronic configuration of
`1s^22s^22p^63s^23p^64s^2`

This element will loose 2 electrons to form
`Ca^(2+)` ion.

Option D: Lithium is the 3rd element of the periodic table having electronic configuration of
`1s^22s^1`

This element will loose 1 electron to form
`Li^(+)` ion.

Hence, the metal that will form the given compound is lithium.