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

Beryllium shows a diagonal relationship in the periodic table with which element?

Answer: Aluminium.

  • A Boron
  • B Magnesium
  • C Aluminium
  • D Silicon

Correct answer: C. Aluminium

Explanation: Due to similar charge/size ratios, Be resembles Al (diagonally placed), sharing properties such as amphoteric oxides and covalent halides.

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.

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