Molecules of carbon are held together by which of the following bonds in Graphite?

by Hydrogen hond

Covalent bond

d) Van der Walls bond


2. The method of writing the location of electron by sublevels called

a) Aufbau principle

b) Pauli exclution principle

c) Configurations

d) Hunds rule



3. Which statement about the four quantum numbers which describe electrons in atoms is incorrect?

a) n= principal quantum number, n-1,2,3,...

b) 1= subsidiary (or azimuthal) quantum number, 1=1, 2, 3,..., (n+1)

c) ml = magnetic quantum number, ml = (-1),. ,0,..., (+1)

d) ms spin quantum number, ms +1/2-or-1/2/

4. Which one of the following sets of quantum numbers could be those of the distinguishing (last) electron of Mo?

a) n=410 ml 0, ms+1/2

b) n=5,1=1,ml = 9, ms = -1/2

c) n=4,1-2, ml=-1, ms=+1/2

d) n=5, 1-2 ml +2, ms 1/2

5. As you move down a group, the atomic radius......

a) Increases

b) Decreases

c) Stays the same

Q2/ Complete the following items with appropriate answers:

____Involve the entrapment of a single guest molecule in the cavity of one host molecule.

2. An ionic bond is formed when....

3. Complexation leads to changing solubility of some drag such as____

4. EDTA is used to remove....... from solutions by.......

5. Inclusion/Occlusion compounds are.......

Q3/

What is the hybridization for

1. NH3

2. CH3COOH S

Q4/

Calculate the effective nuclear charge for valence electron in Cl (Atomic number-17)

هذا الملف اذا ما اجو منه بالفاينل فلوسكم مرجوعة

مرشح من هسه، 😂

محاضرة السابعة د.مهتدى عاشت االايادي 🤍

https://youtu.be/BYgnYw6gRCg
#لاعضوية محاظرة ٢
فيديو مهم🤝🏻

#لاعضوية_نضري

https://youtu.be/0VsXBpEdboM

هذا يوضح حل المسائل ع quantum numbers حلو شرحه شوفوه بس لازم فاهمين وحافظين قيم كل quantum numbers

قيم ml

كل ال quantum numbers

اول حقل للاغلفة الرئيسية والثاني للثانوية والثالث ترتيب الكتروني والرابع عدد الاوربيتالات والخامس عدد الالكترونات الي يتشبع بيها كل غلاف ثانوي

https://youtu.be/xOZLQhg7kHA

شرح بالعربي