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In What Respects Do the Properties of Group 1 Elements Differ from Those of Group 17 Elements? Explain with Examples by Taking One Element from Each Group. - CBSE Class 10 - Science

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Question

In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.

Solution

Let us explain the properties by taking the example of sodium (Na) in group 1 and chlorine (Cl) in group 17:

Properties Group 1 Group 17
i) Atomic number Na, atomic number is 11 Cl, atomic number is 17
ii) Size of the atom Na has a smaller size than Cl Cl has a larger atomic size comparatively
iii) Metallic character Na is a metal, shows more metallic character Cl is non-metallic
 iv) Valence electron Number of valence electrons is 1 for Na metal Number of valence electrons is 7 for Cl
v)Electronegativity/ Electropositivity Na is electropositive in nature Cl is electronegative in nature
vi) Chemical reactivity Na is basic in nature Cl is acidic in nature
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APPEARS IN

 Lakhmir Singh Solution for Chemistry for Class 10 (2019 Exam) (2018 to Current)
Chapter 5: Periodic Classification Of Elements
Q: 36.4 | Page no. 305

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Solution In What Respects Do the Properties of Group 1 Elements Differ from Those of Group 17 Elements? Explain with Examples by Taking One Element from Each Group. Concept: The Modern Periodic Table.
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