MCQ
$pH$ of $NaCl$ solution is
- ✓$7$
- B$0$
- C$ > 7$
- D$ < 7$
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$^{200}X \,:\, 90\%$ $^{199}X\, :\, 8.0\%$ $^{202}X\, :\, 2.0\%$
The weighted average atomic mass of the naturally occurring element $X$ is closest to......$amu$
