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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which element has the lowest electronegativity
  • ✓
    $Li$
  • B
    $F$
  • C
    $Fe$
  • D
    $Cl$
✓

Answer

Correct option: A.
$Li$
a
(a) $L{i_3} - 1{s^2}2{s^1}$ donates $1{e^ - }$ easily.

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Isotope            Relative abundance           $(\%)$ Atomic mass $(u)$
$12_C$                 $ 98.8$                                 $ 12$
$13_C$                 $ 1.18$                                 $ 13.1$
$14_C$                 $ 0.02$                                 $ 14.1$

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