Question

which formula accurately represents a neutral ionic compound? choose 1 answer: a mgo b mgra c mgbr show periodic table

Explanation:

Step1: Determine ion charges

Magnesium (Mg) has a +2 charge as it is in Group 2 of the periodic table. Oxygen (O) has a -2 charge as it is in Group 16.

Step2: Check charge - neutrality

For MgO, +2+( - 2)=0, so it is a neutral ionic compound.

Step3: Analyze other options

Radium (Ra) is also a Group 2 element with a +2 charge, so MgRa is not a valid ionic - compound as both are cations. Bromine (Br) in Group 17 forms a - 1 charge. For MgBr, the overall charge is +2+( - 1)= + 1, not neutral.

Answer:

A. MgO