🧪 Chemistry · Classification of Elements and Periodicity in Properties · NEET & JEE

Using Slater's rules, the effective nuclear charge for a 3p electron in chlorine (Z=17) is approximately:

Answer: 6.10.

A 6.10
B 17.0
C 8.75
D 5.75

Correct answer: A. 6.10

Explanation: For Cl 3p: Z*=17 - [2(1.00) + 8(0.85) + 6(0.35)] = 17 - [2 + 6.8 + 2.1] = 17 - 10.9 = 6.1.

The complete modern periodic table showing all 118 elements with atomic number, symbol, and atomic mass, color-coded by element category

The complete modern periodic table (118 elements). Image: Cepheus et al., Public Domain, via Wikimedia Commons.

Concept context

The periodic table organises all 118 elements by atomic number and similar properties. Study periodic trends like atomic radius, ionization energy, and electronegativity, and learn how an element's position predicts its behaviour.

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Using Slater's rules, the effective nuclear charge for a 3p electron in chlorine (Z=17) is approximately:

Concept context

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