Question

BeCl2 is covalent while MgCl2 is ionic?​

Answer 1

Answer:

your answer is here !

Explanation:

A chemical bond between atoms of different elements in a compound can be mostly covalent, some covalent and some ionic, or mostly ionic in nature.  That depends on the extent of electron sharing that happens between the two atoms.

Covalency means sharing of electrons,  Ionic means giving away the electrons or holding the electrons.

Ionic nature increases with increase in the size of cation or metal.  As the electron is loosely bound to the nucleus when the radius is large.   Covalency is also affected by with the charge present on the cation. Large charge present on cation can attract the electron. 

Beryllium , Magnesium and Calcium are in the group 2 and alkaline earth metals.  Size of Beryllium is less than that of Magnesium. Magnesium atom is smaller than that of Calcium.  They all have same charge on the atom/ion.

So Be - Cl bond is most covalent, Mg - Cl bond is less covalent and some ionic, and Ca - Cl bond is most covalent among the three.

Answer 2

BeCl2 is covalent while MgCl2 is ionic but both has the 2 valence electrons.

• Becl2 is a covalent bond because it has mutually shared electrons to share electrons.
• An ionic bond is Mgcl2. It falls under the ionic because one atom is gaining and another is losing the electron.
• In both of that, the Be is more reactive, so it reacts with cl to combine to form that bond.
• In Mg, it is more reactive, so it quickly reacts with cl to form the bond.
• An atom is made up of the proton, electron and neutron.
• It revolves around the nucleus.
• The proton is a positive charge, and the neutron has no charge; the electron sometimes acts in a negative charge.
• An atom cant is broken down easily; whether it is chemically, it is not possible.
• Atoms are combined to form compounds.
• An atom of the elements has the same properties.

Therefore, BeCl2 is covalent while MgCl2 is ionic but both has the 2 valence electrons.

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