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

The general formula of the highest (most common) oxide formed by an element of Group 15 is:

Answer: E₂O₅.

A EO₂
B E₂O₃
C E₂O₅
D EO₃

Correct answer: C. E₂O₅

Explanation: Group 15 elements have 5 valence electrons, and their highest oxide corresponds to the +5 state, giving the formula E₂O₅.

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 →

The general formula of the highest (most common) oxide formed by an element of Group 15 is:

Concept context

More Classification of Elements and Periodicity in Properties questions