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For the element having atomic number 120, which symbol and IUPAC systematic name are correctly paired?

1. Ubn and unbinilium
2. Ubn and unbinunium
3. Ubn and unbinum
4. Ubn and unnilium

Correct answer: Ubn and unbinilium

Solution

The symbol 'Ubn' corresponds to the element with atomic number 120, and 'unbinilium' is the IUPAC systematic name that follows the naming convention for elements in this range, making this pairing correct.

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