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Q:

The reactivity of an atom arises from 

A) the existence of unpaired electrons in the valence shell B) the energy differences between the electron shells
C) the sum of the potential energies of all the electron shells D) the average distance of the outermost electron shell from the nucleus
 
Answer & Explanation Answer: A) the existence of unpaired electrons in the valence shell

Explanation:

When atoms react they do so in order to reach the lowest energy, which is the most stable. The electrons orbitals will overlap in the way that reduces the energy the most. Orbitals of similar energy will produce the greatest stabilisation.The answer you gave isn't the whole story, it depends what species is reacting with what. The effective nuclear charge on the atom will affect the energy of the valance electrons.

 

Hence, the reactivity of an atom arises from the existence of unpaired electrons in the valence shell.

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Q:

The Mohiniyattam dance form was developed in which state

Answer

Kerala

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Subject: Indian Culture

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Q:

Who is the First Test Tube Twins Babies in the World?

A) Louise Brown & Vesli Multinder B) Stephan & Amanda
C) Harsha & Indhira D) Elizabeth Car & Carl Wood
 
Answer & Explanation Answer: B) Stephan & Amanda

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Filed Under: World History

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Q:

Exogenic forces are connected with

A) Plucking action B) Volcanic action
C) Lithosperic D) Atmospheric
 
Answer & Explanation Answer: D) Atmospheric

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Filed Under: World Geography

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Q:

State funding of elections takes place in

A) Germany and Austria B) USA and Canada
C) France and Italy D) Britain and Switzerland
 
Answer & Explanation Answer: A) Germany and Austria

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Q:

A program which helps create written documents and lets you go back and make corrections as necesary ______

A) Spreadsheet B) Personal writer
C) Word printer D) Word processor
 
Answer & Explanation Answer: D) Word processor

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Filed Under: Computer
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Q:

The court language during the reign of Akbar was _____ ?

A) Urdu B) Persian
C) Arabic D) Hindi
 
Answer & Explanation Answer: B) Persian

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Filed Under: Indian History
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Q:

Which country has always remained free from foreign rule?

A) Phillipines B) Nepal
C) USA D) Laos
 
Answer & Explanation Answer: B) Nepal

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Filed Under: World History

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