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🧪 Chemistry  ·  Classification of Elements and Periodicity in Properties  ·  NEET & JEE

According to IUPAC nomenclature for elements with atomic number greater than 100, the element with atomic number 104 is named:

Answer: Unnilquadium.

  • A Unniltrium
  • B Unnilquadium
  • C Unnilpentium
  • D Ununbium

Correct answer: B. Unnilquadium

Explanation: Using the roots un (1), nil (0) and quad (4), the systematic name for element 104 is Unnilquadium (symbol Unq).

The complete modern periodic table showing all 118 elements with atomic number, symbol, and atomic mass, color-coded by element category

The complete modern periodic table (118 elements). Image: Cepheus et al., Public Domain, via Wikimedia Commons.

Concept context

The periodic table organises all 118 elements by atomic number and similar properties. Study periodic trends like atomic radius, ionization energy, and electronegativity, and learn how an element's position predicts its behaviour.

Read the full Classification of Elements and Periodicity in Properties notes →