بحث علمي عنTransition metal complexes : colours , multiple oxidation and magnetism

اعمل في المجال الطبي والبحث العلمي ولدىّ خبرة طويلة في كتابة المقالات الطبية والعلمية العامة والمتخصصة باللغتين الانجليزية والعربية، حيث انه بفضل الله يمكنني عمل:

1- كتابة مقالات متوافقة مع السيو

2- إضافة صور، أشكال، جداول عند الطلب

3- إضافة المراجع والروابط مع تضبيطها على حسب النمط المطلوب (References style)

4- كتابة الاسايمنتات (Assignments)

5-التسليم في الوقت المحدد

وهذا بحث علمي مطابق لمواصفات السيو قمت به اثناء دراستي في الجامعه وحصلت فيه علي درجة الامتياز.

Three series of elements are formed by filling the 3d, 4d and 5d shells of

electron forms three series of elements. Together these comprise the dblock element.

• D-block elements are often called ‘transition elements’ because their

position in the periodic table is between the s-block and p-block elements.

• Their properties are transitional between the highly reactive metallic

elements of the s-block, which typically form ionic compounds, and the

elements of the p-block, which are largely covalent.

• In the s- and p-block s, electrons are added to the outer shell of the atom.

• In the d-block, electrons are added to the penultimate shell, expanding it

form 8 to 18 electrons.

• Typically the transition elements have an incompletely filled d level.

• The zinc group has a d10 configuration and since the d sell is complete,

compounds of these elements are not typically and show some differences

from the others.

• The elements make up three complete rows of ten elements and an

incomplete fourth row.

• The position of the incomplete fourth series is discussed with the f-block

elements.

• Transition metals are found in the middle of the periodic table. In addition

to being found in the metallic state, they also form a range of compounds

with different properties. Many of these compounds are ionic or network