1.

Element A,B and C with atomic number a,a+1 and z+2 respecitively form positvie ions having equal numberof electons compare and contrast the size of the give reasons

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Solution :As the positive ions have equal NUMBER of ELECTONS A,B and C must be ioselectronic and form unipositive dipositive and tripositive ions .with the increase in nuclear charge the effective nuclear force of attraction on the outermost eletrons increasetherefore the ionic size decrease from `A^(+),B^(+2)` and `C^(+3)`


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