Question

Calculate effective nuclear charge experience by valence electron in an atom having atomic number 24 and shielding constant 21.45.
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Answer 1

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Explanation:

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Answer 2

Answer:

The effective nuclear charge experienced by a valence electron in an atom having an atomic number $24$ and shielding constant $21.45$ is $3$·

Explanation:

Given that,

The atomic number, Z $=$ $24$

The shielding constant, $\sigma$ $=$ $21.45$

We know that,

An effective nuclear charge is a positive charge from the protons that a valence electron is experiencing and shielding effect is an effect where the outermost electrons are shielded from the nucleus·

To calculate the effective nuclear charge we have the relationship that,

   $Z_{(effe.)} \ =\ Z\ -\ \sigma$

where,

$Z_{(effe.)}$  $=$ The effective nuclear charge

Z $=$  The atomic number

$\sigma$ $=$  The shielding constant

On substituting the values we get,

⇒ $Z_{(effe.)} \ =\ Z\ -\ \sigma$

⇒ $Z_{(effe.)} \ =\ 24\ -\ 21.45$

⇒ $Z_{(effe.)} \ =\ 2.55$

⇒ $Z_{(effe.)}$ ≅ $3$

Therefore,

The effective nuclear charge  experienced by a valence electron in an atom having an atomic number $24$ and shielding constant $21.45$ is $3$·