Question

For 50 points!!
chlorine and potassium belong to group 17 and 1. Discuss their ionisation energy,valency,metallic character and electronegativity.​

Answer 1

Explanation:

Chlorine=1251.9kj/mol (1st) ionization energy

Sodium=496kj/mol

Chlorine= 7 (valency)

Sodium=1

Na is more metallic character than Cl.

Na Electronegativity = 0.93

Cl = 3.16

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Answer 2

Answer:

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Explanation:

chlorine :

1. ionisation energy: 1st: 1251.2 kJ/mol
2. 2nd: 2298 kJ/mol
3. 3rd: 3822 kJ/mol
4. valency: 1
5. metallic character: Chlorine is the most non-metallic element.
6. It contains 7 valence electrons in its outermost shell. Compared to other elements in the third row its atomic size is the smallest. Similarly, the nuclear charge is also more.
7. electro negativity: Pauling scale: 3.16

potassium :

1. ionisation energy : 1st: 418.8 kJ/mol
2. 2nd: 3052 kJ/mol
3. 3rd: 4420 kJ/mol
4. valency: 1
5. metallic character: Potassium is a chemical element with the symbol K (from Neo-Latin kalium) and atomic number 19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force.
6. electronegativity: Pauling scale: 0.82