A) \[62.02\times {{10}^{23}}\]atoms
B) \[622\times {{10}^{23}}\]atoms
C) \[6.023\times {{10}^{23}}\]atoms
D) \[6.02\times {{10}^{-23}}\]atoms
Correct Answer: C
Solution :
\[1\] mole of\[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\], contains two gram atoms of sulphur. \[0.5\] mole of \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] contains \[1\] gram atom of sulphur \[1\] gram atom \[=\] No. of atoms in one mole Therefore, \[0.5\] mole of \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] contains \[6.023\times {{10}^{23}}\] atoms of sulphur.
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