MCQ
The liquid field metal expanding on solidification is
- ✓$Ga$
- B$Al$
- C$Zn$
- D$Cu$
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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......$amu$


${H_{2(g)}} + {I_{2(g)}}$ $\rightleftharpoons$ $2H{I_{(g)}}$