C-06-Q130mediumsingle_mcq২ মোল H₂O এ H পরমাণু সংখ্যা—a2×6.023×10232 \times 6.023 \times 10^{23}2×6.023×1023b4×6.023×10234 \times 6.023 \times 10^{23}4×6.023×1023c6.023×10236.023 \times 10^{23}6.023×1023d8×6.023×10238 \times 6.023 \times 10^{23}8×6.023×1023