MCQ
The first and last elements of actinides are:
- AActinium and Thorium.
- BActinium and Nobelium.
- CActinium and Mendelevium.
- ✓Actinium and Lawrencium.
✓
Answer
Correct option: D.
Actinium and Lawrencium.
We have $15$ elements in actinides. They are from atomic number $89$ to $103$ Actinium, Thorium, Protactinium, Uranium, Neptunium, Plutonium, Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium, Lawrencium. Hence, from these list we could say that Actinium is the first and Lawrencium is the last element in actinides.
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