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IB DP Chemistry Questions

3.1 Periodic Table

Question 1

Which of the following best describes the trend in atomic radius as you move from left to right across a period in the periodic table?

A. Increases steadily

B. Decreases steadily

C. Remains constant

D. First increases, then decreases

Question 2

Transition metals are known for their ability to form coloured compounds. What is the primary reason for this characteristic?

A. Presence of multiple oxidation states

B. Incomplete d orbitals

C. High electronegativity

D. Large atomic size

Question 3

Which block of the periodic table contains elements that primarily fill their f orbitals?

A. s-block

B. p-block

C. d-block

D. f-block

Question 4

Which of the following elements is NOT a main group element?

A. Oxygen

B. Silicon

C. Iron

D. Neon

Question 5

Which property generally increases down a group in the periodic table?

A. Ionization energy

B. Electronegativity

C. Atomic radius

D. Electron affinity

Question 6

a) Define the term "period" in the context of the periodic table and explain its significance in determining the properties of elements. [2]

b) Elements in the same group of the periodic table often have similar chemical properties. Provide a reason for this observation. [2]

Question 7

a) Describe the general trend in atomic radius as you move from left to right across a period in the periodic table. [2]

b) Transition metals are known for their role in catalysis and the formation of coloured compounds. Explain why transition metals often form coloured compounds. [2]

Question 8

a) The f-block elements are often referred to as lanthanides and actinides. Briefly describe the significance of these f-block elements. [2]

b) Elements are classified into s, p, d, and f blocks based on the last orbital being filled. Explain the general properties of elements in the p-block. [2]

Question 9

a) Explain the difference between a group and a period in the periodic table. [2]

b) The elements of Group 1 are known as alkali metals. Describe a common chemical property of alkali metals. [2]

c) Why do elements in Group 17, known as halogens, have high electronegativities? [3]

Question 10

a) What are transition metals, and how do they differ from main group elements in terms of electron configuration? [3]

b) Explain the significance of the d-block in the periodic table. [2]

c) Why do some transition metals exhibit variable oxidation states? [3]

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