# Transition elements in the periodic table

> Transition elements occupy the middle of the long-form periodic table, between the s-block and the p-block; they are more than 60 elements (over half of the known elements). They split into main transition elements (d-block) and inner transition elements (f-block: lanthanides and actinides). The chapter studies the main transition elements only.

> [ar-EG] الـ transition elements واقعة في نص الـ long-form periodic table، بين الـ s-block والـ p-block، وعددها أكتر من 60 عنصر (أكتر من نص العناصر المعروفة). بتنقسم لـ main transition elements (الـ d-block) و inner transition elements (الـ f-block: الـ lanthanides والـ actinides)، والفصل ده بيدرس الـ main transition elements تحديدًا. المطلوب: تحدد مكانها في الجدول وتسمّي النوعين.

Part of: Transition Elements (https://yaani.ai/en/learn/chemistry/chem-s3-en.ch1)

## Builds on

- Blocks of the periodic table

## Common mix-ups

- Transition elements are a handful of metals.: They are more than half the known elements. ([ar-EG] لأ، دي أكتر من 60 عنصر، يعني أكتر من نص العناصر المعروفة.)
- Lanthanides and actinides are main transition elements studied here.: Lanthanides and actinides are inner transition elements of the f-block, not main transition elements. This chapter studies the main transition elements (the d-block) only. ([ar-EG] الـ lanthanides والـ actinides دول inner transition elements من الـ f-block، والفصل ده مش بيدرسهم.)

Source: https://yaani.ai/en/concept/te.position-in-periodic-table