Quiz on Modern Periodic Table and Transition Elements

How many horizontal periods are in the modern periodic table?

• 7

• 12

• 10

• 5

What principle states that electrons occupy the energy sublevels of lower energy first?

• Pauli Exclusion Principle

• Quantum Theory

• Building-up Principle

• Hund's Rule

Which quantum number defines the order of the principal energy levels?

• Spin quantum number

• Principal quantum number

• Subsidiary quantum number

• Magnetic quantum number

What is the maximum electron capacity of the 'd' sublevel?

• 10

• 2

• 14

• 6

Which element has the electronic configuration [Ar], 4s², 3d⁵?

• Zinc

• Copper

• Manganese

• Iron

What is the oxidation state of Scandium in its compounds?

• +4

• +3

• +2

• +1

Which of the following elements is not a transition element?

• Copper

• Zinc

• Iron

• Titanium

What is the main use of Titanium?

• Glass production

• Fertilizers

• Dental implants

• Electrical wiring

Which element is known for its high resistance to rusting?

• Zinc

• Chromium

• Iron

• Copper

What is the primary use of Manganese dioxide (MnO₂)?

• Fungicide

• Oxidizing agent

• All of the above

• Catalyst