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A, B, C Are Three Elements in Which B is an Inert Gas Other than Helium.With this Information Complete the Following Table. - Chemistry

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A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.

Element Atomic number No. of electrons in the valence shell Group to which the element belongs
A Z - 1    
B Z    
C Z + 1    

Also, explain the following : Ionization energy of element C is less than that of element A.

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Solution

Element Atomic number No. of electrons in the valence shell Group to which the element belongs
A Z - 1    
B Z 8 18
C Z + 1    

Since C belongs to group 1 it has less ionization energy than A as atomic size of group 1 elements is more than that of group 17.

Concept: Periodic Properties - Periodic Properties: Ionisation Potential (Ionisation Energy)
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Frank ICSE Class 10 Chemistry Part 2
Chapter 1 Periodic Properties And Variation Of Properties: Physical And Chemical
Exercise | Q 2.2 | Page 17
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