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What would be the IUPAC name and symbol for the element with atomic number 120?

Correct Answer

To find the IUPAC name and symbol for the element with atomic number 120, we use the systematic nomenclature rules provided by IUPAC. This involves using numerical roots for each digit of the atomic number and adding "ium" at the end.

From the IUPAC nomenclature table, the roots for the digits 1, 2, and 0 are un, bi, and nil, respectively.

Putting these roots together in the order of the digits that make up the atomic number (1, 2, 0) and adding "ium" at the end gives the name unbinilium. The symbol is formed by taking the first letters of each root, resulting in the symbol Ubn.

Exercise: IN-TEXT QUESTIONS (PROBLEMS) | Q: Problem 3.1 | (Page 7)
For More Understanding

Explanation

The IUPAC has recommended a systematic nomenclature for undiscovered or newly synthesized elements based directly on their atomic number. The numerical roots for 1, 2, and 0 are 'un', 'bi', and 'nil'. Combining these gives 'unbinilium', and the corresponding three-letter symbol is 'Ubn'.

Solution Steps

  1. Step 1: Identify the digits of the atomic number 120, which are 1, 2, and 0.

  2. Step 2: Find the corresponding numerical roots from the IUPAC nomenclature table: 1 is un, 2 is bi, and 0 is nil.

  3. Step 3: Combine the roots in order and add "ium" at the end to get the name unbinilium.

  4. Step 4: Form the symbol by taking the first letters of the roots to get Ubn.

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