Скачать или смотреть 11 Chemistry Solved Exercise Chapter 2 Atomic Structure | Chemistry 11 Class MCQs+Short Question

📘 11 Chemistry Solved Exercise Chapter 2 Atomic Structure New Book 2025

🎯 Complete MCQs + Short Questions in One Video!
This lecture provides full solved exercises from Chapter 2 – Atomic Structure – of the 1st Year Chemistry New Book 2025. All MCQs and Short Answer Questions are explained clearly in Urdu + English for board exam preparation, MDCAT/ECAT entry tests, and full concept clarity.

🔍 ⏱️ Time Stamps:

MCQs Section:
00:30 – The quantum number ‘m’ of a free gaseous atom is associated with:
01:18 – When 3d subshell is completely filled, the next entering electron goes into:
02:38 – What are the quantum number values for 2p orbitals?
04:35 – An electron having the values n = 4, l = 0, m = 0, s = +½ lies in which orbital?
07:35 – What are the quantum number values (n, l, m) for the 4th electron of ⁴₉Be atom?
09:26 – What is the correct order of first ionization energies?
11:30 – A p orbital has a characteristic shape with how many lobes?
12:10 – How are the three p orbitals in a given energy level oriented?
13:05 – How many d orbitals are present in a given energy level?
13:49 – What information does the principal quantum number (n) provide about orbitals?
14:23 – How many unpaired electrons are present in a cobalt atom?

Short Answer Questions:
15:47 – Justify: There are three orientations of p-orbitals due to three values of magnetic quantum number.
16:26 – Explain: Why is the third ionization energy (I₃) of Mg much greater than its second (I₂)?
17:00 – Among Li, K, Ca, S, and Kr — which element has the lowest and which has the highest first ionization energy?
18:34 – (i) Write the electronic configuration of potassium (Z = 19)
    (ii) Why does 4s fill before 3d in potassium?
19:33 – (i) For element X (Z = 17, A = 35), calculate protons, neutrons, and electrons.
    (ii) If X forms a -1 ion, how many electrons will it have?
20:54 – In the ground state of mercury (⁸⁰Hg):
    (i) How many electrons occupy orbitals with n = 3?
    (ii) How many electrons are in 4d orbitals?
    (iii) How many electrons occupy the 4pz orbital?
    (iv) How many valence electrons have spin “up” (s = -½)?
23:36 – Based on the given successive ionization energies, identify the periodic group of the element.
25:31 – (i) What is the general order of filling orbitals up to 4p?
    (ii) Why does the 4s subshell fill before 3d according to Aufbau principle?

🎓 Best For:
✅ 1st Year / 11th Class Chemistry Students – Punjab Board (New Syllabus 2025)
✅ Urdu Medium Students with English Explanation
✅ MDCAT / ECAT Aspirants
✅ Anyone needing full solved MCQs + SQs with clarity

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