2. The electronegativity difference between Mg atoms is zero and between Cl atoms is also zero. Yet the
bond type in magnesium is metallic while the bond type in chlorine is covalent. Discuss the reasons for
this.
3. Discuss the effect of atomic radius on the value of electronegatity.
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Answers
Answer:
Magnesium and fluorine combine to form an ionic compound. What is the formula for the compound? Mg most commonly forms a 2+ ion. This is because Mg has two valence electrons and it would like to get rid of those two ions to obey the octet rule.
The size of Mg is larger due to which it has low ionization energies and each valence electron of each Mg atom is loosely held to the own atom even near by atoms can attract that electrons and the same case happens with all of valence electrons of metallic atoms. Therefore the electron in any metal does not belong to only one atom they jump from atom to atom. and trillions of electron when jumps from one atom to another they form electronic sea that is almost attracted by each atom in that sea and this is called metallic bonding
In case of Chlorine, They are said to be joined by a covalent bond The reason that the two chlorine atoms stick together is that the shared pair of electrons is attracted to the nucleus of both chlorine atoms.
3.Since chlorine's 17 protons are greater than magnesium's 12 protons, chlorine will have a greater effective nuclear charge to draw chlorine's valence electrons closer to the nucleus and, thus, chlorine is expected to have the smaller atomic radius, while magnesium with the lower effective nuclear charge is expected to have larger size