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Trends in the Periodic Table MCQ2

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Questions and Answers

What is the trend in electronegativity down a group?

Electronegativity decreases

Why does the 1st ionisation energy increase across a period?

Due to increased nuclear charge

What is the trend in atomic radius down a group?

Atomic radius increases

What is the definition of the 1st ionisation energy of an element?

<p>The minimum energy required to remove the most loosely bound electron from 1 mole of gaseous atoms</p> Signup and view all the answers

What is the reason for the decrease in 1st ionisation energy down a group?

<p>Increased atomic radius</p> Signup and view all the answers

What is the definition of the 2nd ionisation energy of an element?

<p>The minimum energy required to remove the most loosely bound electron from each singly charged positive ion</p> Signup and view all the answers

What is the trend in electronegativity across a period?

<p>Electronegativity increases</p> Signup and view all the answers

Which factor leads to a decrease in electronegativity down a group?

<p>Increased atomic radius</p> Signup and view all the answers

What is the relationship between atomic radius and nuclear charge across a period?

<p>Atomic radius decreases as nuclear charge increases</p> Signup and view all the answers

Why does electronegativity increase across a period?

<p>Due to increased nuclear charge</p> Signup and view all the answers

What is the trend in 1st ionisation energy down a group?

<p>Decreases</p> Signup and view all the answers

What is the relationship between atomic radius and 1st ionisation energy across a period?

<p>Atomic radius decreases as 1st ionisation energy increases</p> Signup and view all the answers

Why does atomic radius increase down a group?

<p>Due to increased screening effect and extra energy levels</p> Signup and view all the answers

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