A.\(\rm{{\,\!}_{27}^{56}{Co}}\)、\(\rm{{\,\!}_{27}^{57}{Co}}\)、\(\rm{{\,\!}_{27}^{58}{Co}}\)、\(\rm{{\,\!}_{27}^{59}{Co}}\)和\(\rm{{\,\!}_{27}^{60}{Co}}\)是摩尔质量不同的五种同素异形体 |
B.\(\rm{{\,\!}_{27}^{60}{Co}}\)放射源可以用来治疗癌症,其中子数与电子数之差等于\(\rm{6}\) |
C.\(\rm{{\,\!}_{27}^{56}{Co}}\)、\(\rm{{\,\!}_{27}^{57}{Co}}\)、\(\rm{{\,\!}_{27}^{58}{Co}}\)、\(\rm{{\,\!}_{27}^{59}{Co}}\)和\(\rm{{\,\!}_{27}^{60}{Co}}\)互为同位素,物理性质几乎相同,化学性质不同 |
D.\(\rm{{\,\!}_{27}^{56}{Co}}\)、\(\rm{{\,\!}_{27}^{57}{Co}}\)、\(\rm{{\,\!}_{27}^{58}{Co}}\)、\(\rm{{\,\!}_{27}^{59}{Co}}\)和\(\rm{{\,\!}_{27}^{60}{Co}}\)互为同分异构体 |