A.2mol | B.3mol | C.4mol | D.5mol |
A.A-x | B.A-x-n | C.A-x+n | D.A+x-n |
A.13C与15N有相同的中子数 |
B.13C与C60互为同素异形体 |
C.15N与14N互为同位素 |
D.15N的核外电子数与中子数相同 |
A.同位素:1H、D+、T2 |
B.0.1 mol的OH-与0.1 mol的-OH中所含质子数相等 |
C.1molC5H12分子中含有17×6.02×1023个共用电子对 |
D.同系物: |
A.161 | B.160 | C.159 | D.158 |
A.34S原子核内的中子数为16 |
B.1H216O在相同条件下比1H218O更易蒸发 |
C.13C和15N原子核内的质子数相差2 |
D.2H+的酸性比1H+的酸性更强 |
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