Question 1

Marks: 1

Which is true about the emission spectrum of hydrogen in the visible region?

The lines converge at longer wavelengths
The lines converge at higher frequency
The lines come from transitions between n=∞ and n=1
The lines are regularly spaced

Key Concepts

Convergence Limits on an Emission Spectrum

Question 2

Marks: 1

The frequency of the point of convergence on a hydrogen emission spectrum is 32.883 x 10¹⁴s^-1.

What is the ionisation energy for one atom of hydrogen?

(h = 6.63 x 10^-34 J s)

32.883 x 10¹⁴x 6.63 x 10^-34 J
$\frac{6.63 \times 10^{- 34}}{32.883 \times 10^{14}}$ J
J
$\frac{32.883 \times 10^{14}}{6.63 \times 10^{- 34} \times 1000}$ J

Key Concepts

Calculating First Ionisation Energy

Question 3

Marks: 1

The first five ionisation energies of an element are shown below.

What element could this ionisation energy graph belong to?

successive-ionisation-energy

N
P
Al
Na

Key Concepts

Deducing the Group

Question 4

Marks: 1

Which are correct explanation(s) for the increase in ionisation energy across a period?

I. Nuclear charge increases

II. Atomic radius decreases

III. Shielding remains constant

I and II only
I and III only
I and III only
I,II and III

Key Concepts

Trends Across a Period

Question 5

Marks: 1

Which spectrum belongs to hydrogen?

eARGWkkX_hydrogen-spectrum

Key Concepts

Convergence Limits on an Emission Spectrum

DP IB Chemistry: HL

Topic Questions

12.1 Electrons in Atoms

Question 1

Key Concepts

Question 2

Key Concepts

Question 3

Key Concepts

Question 4

Key Concepts

Question 5

Key Concepts

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