Correct order of ionic size is
Correct order of ionic size is
Option 1 - <p>Be²⁺ ≅ Li⁺ < Na⁺ < Mg²⁺<br><!-- [if !supportLineBreakNewLine]--><br><!--[endif]--></p>
Option 2 - <p>Be²⁺ < Mg²⁺ ≅ Li⁺ < Na⁺<br><!-- [if !supportLineBreakNewLine]--><br><!--[endif]--></p>
Option 3 - <p>Mg²⁺ < Na⁺ < Be²⁺ < Li⁺<br><!-- [if !supportLineBreakNewLine]--><br><!--[endif]--></p>
Option 4 - <p>Li⁺ < Be²⁺ < Mg²⁺ < Na⁺</p>
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5 months ago
Correct Option - 2
Detailed Solution:
Correct order : Na? > Li? = Mg? > Be²?
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CH3COOH + NaOH → CH3COONa + H2O
ΔH = –50.6 kJ/mol
NaOH + SA [HCl] → NaCl + H2O
ΔH = –55.9 kJ/mol
the value of ΔH for ionisation of CH3COOH
⇒ ΔH = +55.9 – 50.6
5.3 kJ/mol
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Chemistry Classification of Elements and Periodicity in Properties 2025
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