Example 1 · difficulty 1/5
The ground state electronic configuration of chromium (Z = 24) is:
- A. [Ar] 3d⁴ 4s²
- B. [Ar] 3d⁵ 4s¹
- C. [Ar] 3d⁶ 4s⁰
- D. [Ar] 3d³ 4s²
Current-syllabus practice · Chemistry
NEET Chemistry D- and F-Block Elements Questions
D- and F-Block Elements practice focused on electronic configurations, oxidation states, colour, magnetism and lanthanoid trends.
200 original questions · explicit provenance labels
ChemistryPlate 71
NeetVellum atlas · fig. chemistry
71
What to master
electronic configurations, oxidation states, colour, magnetism and lanthanoid trends.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 2/5
The lanthanoid contraction is primarily attributed to:
- A. poor shielding of nuclear charge by 4f electrons
- B. perfect shielding of nuclear charge by 4f electrons
- C. a steady increase in atomic size across the series
- D. progressive filling of poorly shielding 5d electrons
Example 3 · difficulty 2/5
Which of the following ions is colourless in aqueous solution?
- A. Cu²⁺
- B. Ni²⁺
- C. Fe²⁺
- D. Zn²⁺
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
How many D- and F-Block Elements NEET questions are available?
NeetVellum currently publishes 200 original, verified questions across the linked canonical chapter.
How should I revise D- and F-Block Elements for NEET?
Attempt questions before rereading, classify each miss, repair the specific concept, and re-practice after a delay until the error pattern disappears.