Why is NaCl more covalent than KCl?

According to Fajan’s rule of polarization, NaCl is more covalent than KCl. so NaCl should have less melting point than KCl. but NaCl has higher melting point than KCl.

Why is NaCl more ionic than KCl?

KCl is more ionic because the ionic character increases as down the group while decreases along the period in the periodic table. Also, the bonding in KCl is more ionic than in NaCl. Electronegativity scales also support that NaCl is less ionic when compared to KCl.

Why does NaCl have a higher melting point than KCl?

NaCl has an interesting property , it’s lattice enthalpy is greater than KCl and RbCl , thus it’s melting point is higher than them.

Which bond is stronger KCl or NaCl?

Size of ions: Smaller the ionic size greater will be lattice energy. Charge on the ions: Greater the charge on the ions greater will be lattice energy. Between NaCl and KCl ,NaCl is stronger than KCl .

Which one is more covalent LiCl or KCl?

In LiCl and KCl the anions are the same. From the periodic table, we can see that Li+ is smaller than K+.So in LiCl more polarisation occurs and makes it more covalent than KCl.

Which bond from each set is most covalent?

The O – O bond is most covalent. The electronegativity difference between like elements is zero. The smaller the electronegativity difference between two atoms, the more covalent the bond. The N – F bond is most covalent.

Does KCl have a high conductivity?

The electrical conductivity of KCl was higher than NaCl. The electrical conductivity increased with the increase in concentration of NaCl and KCl, while a reverse trend was observed for the molar conductivity.

Which is more covalent NaCl or KCl?

According to Fajan’s rule of polarization, NaCl is more covalent than KCl. so NaCl should have less melting point than KCl. but NaCl has higher melting point than KCl. Which is more covalent NaCl or MgCl2? MgCl2 is more covalent than NaCl because Mg has more positive change and small size.

Which one is more ionic NAF or NaCl?

The decreasing order of ionic character NaF>NaCl>NaBr>NaI. Because among the halogens the electronegativity is more for Fluorine followed by Chlorine, Bromine, Dodine. According to Fajan’s rule, the size should be small to have more ionic character. Thus NaF is more ionic.

What is the nature of polarization According to fajan’s rules?

Fajan’s rules were developed based on the concept: “greater the polarization, greater is the covalent nature”. There are two factors which are crucial in deciding the extent of polarization i.e.,

How did Kazimierz Fajans predict ionic bonds?

A few ionic bonds have partial covalent characteristics which were first discussed by Kazimierz Fajans in 1923. At that time with the help of X-ray crystallography, he was able to predict ionic or covalent bonding with the attributes like ionic and atomic radius. What is Fajans’ rule?

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