Neco 2020 Chemistry Question 1

Practice practical question 1 from the 2020 Neco Chemistry examination. This question covers Atomic Structure .

Neco 2020 Chemistry Practical

Topic: Atomic Structure

Question 1 NECO • 2020 • CHEMISTRY • practical

A mass‑spectrometer was used to analyse an unknown gaseous element. The instrument gave two distinct peaks as follows: - Peak at mass number 35 with relative intensity 75 % - Peak at mass number 37 with relative intensity 25 % Using the data provided, answer the following:

( a )

Calculate the relative atomic mass of the element to two decimal places.

( b )

State the number of neutrons present in the most abundant isotope of the element.

( c )

Write the ground‑state electron configuration of the element using the Aufbau principle.

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This is Neco 2020 Chemistry Question 1. It is one of the practical questions from the 2020 Neco Chemistry examination.

The question covers Atomic Structure .

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