Post Utme Abu 2019 Chemistry Question 9

Practice objective / multiple choice question 9 from the 2019 Post Utme Abu Chemistry examination.

Post Utme Abu 2019 Chemistry Objective / Multiple Choice

Question 9 POST_UTME_ABU • 2019 • CHEMISTRY • objective

The atomic radius (r) of an atom is given by the equation: r = \( n^2 / Z \) * a0, where n is the principal quantum number, Z is the atomic number, and a0 is the Bohr radius. If the atomic number is 6, the principal quantum number is 2, and the Bohr radius is 5.29 x 10^\( -11 \) m, calculate the atomic radius (r).

A. 2.5 x 10^\( -11 \) m

Correct Answer B. 5.0 x 10^\( -11 \) m

C. 7.5 x 10^\( -11 \) m

D. 1.0 x 10^\( -10 \) m

Correct Answer

Correct Option:

5.0 x 10^\( -11 \) m

This is Post Utme Abu 2019 Chemistry Question 9. It is one of the objective questions from the 2019 Post Utme Abu Chemistry examination.

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