Question

The compound which is formed by
ionic bonding is

1. Mgo
2. H20
3. NH3
4. CO2​

Answer 1

Explanation:

1-Oxygen gains two electrons to have an octet. The ionic bond between ions results from the electrostatic attraction of opposite charges. The final formula of magnesium oxide is MgO. Magnesium Nitride: Determine the formula of a compound formed by the reaction of magnesium and nitrogen.

2- water (H2O) is a compound consisting of two hydrogen atoms bonded to an oxygen atom. The atoms within a compound can be held together by a variety of interactions, ranging from covalent bonds to electrostatic forces in ionic bonds.

3 -NH3 (Ammonia) is a covalent compound. ... - As nitrogen and hydrogen both are non-metallic compounds and do not have a tendency to donate their electrons, so 'Ammonia' cannot be an ionic compound. Ionic compounds have a tendency to donate their electrons for the formation of ionic bonds.

4 -Carbon dioxide, or CO2, forms a covalent bond.

In an ionic bond, one atom donates an electron to another atom, creating ions, which are positively and negatively charged atoms. These ions are attracted to each other, creating a bond.

Answer 2

The compound which is formed by ionic bonding is..

1. MgO
2. H₂O
3. NH₃
4. CO₂

Answer : option (1) MgO

Explanation : An ionic bond is formed by complete transferring of electrons from metal atom to non - metal atom.

The conditions of forming ionic bond between two atoms are..

• One atom should be metal and the other should be non - metal.
• Metal should have low ionisation energy so that it can easily release electron from its outermost orbit.
• Non-metal should have high negative value of electron gain enthalpy so that it can easily add electrons to its outermost orbit.

From above explanation, it is clear that MgO is the only one who has ionic bond because Mg is metal of low ionisation energy and O is non metal of high electron gain enthalpy.

Therefore the correct option is (1) MgO.

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