Neco 2017 Chemistry Question 1

Practice essay / theory question 1 from the 2017 Neco Chemistry examination. This question covers Atomic Structure .

Neco 2017 Chemistry Essay / Theory

Topic: Atomic Structure

Question 1 NECO • 2017 • CHEMISTRY • essay

The diagram shows a simplified Bohr model of an unknown element X.

( a )

Identify the element and write its chemical symbol.

( b )

Determine the atomic number (Z), mass number (A) and the number of neutrons in the nucleus.

( c )

Write the ground‑state electron configuration of the element using the Aufbau principle (show the distribution of electrons in shells).

( d )

State two common oxidation states of this element and briefly justify each based on the electron configuration.

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This is Neco 2017 Chemistry Question 1. It is one of the essay questions from the 2017 Neco Chemistry examination.

The question covers Atomic Structure .

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