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CHEMISTRY CH11 Atomic Structure — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceCHEMISTRY CH11 Atomic Structure1 Mark
MCQ
Among the following the odd pair is
  • A
    ${ }_8^{18} O ,{ }_9^{19} F$
  • ✓
    ${ }_{18}^{40} Ar ,{ }_7^{14} N$
  • C
    ${ }_{14}^{30} Si _{,}{ }_{15}^{31} P$
  • D
    ${ }_{20}^{40} Cr ,{ }_{19}^{39} K$
✓

Answer

Correct option: B.
${ }_{18}^{40} Ar ,{ }_7^{14} N$
${ }_{18}^{40} Ar ,{ }_7^{14} N$

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