atomic number 87
ریشه و کاربرد
ریشه
The term 'atomic' refers to atoms, and 'number' refers to a numerical value assigned to each element based on the number of protons in its nucleus. The number 87 is specific to the element being referred to.
مثال
- Francium has an atomic number of 87.
- Atomic number 87 corresponds to the element francium.
- The atomic number 87 indicates the number of protons in a francium atom.
تعریف انگلیسی
noun
- a radioactive element of the alkali-metal group discovered as a disintegration product of actinium