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Nowadays many scientists depend on radiocarbon for dating age-old objects. An atom of ordinary carbon has six protons and eight
Nowadays many scientists depend on radiocarbon for dating age-old objects. An atom of ordinary carbon has six protons and eight
admin
2012-09-10
82
问题
Nowadays many scientists depend on radiocarbon for dating age-old objects.
An atom of ordinary carbon has six protons and eight neutrons.
选项
A、Right
B、Wrong
C、Not mentioned
答案
B
解析
这句话是错的,答案在第二段第二句:An atom of ordinary carbon,called carbon-12,has six protons(质子)and six neutrons(中子)in its nucleus.…普通的碳原子有6个中子。
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