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NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Importance and Snapshot of Classification of Elements and Periodicity in Properties - Study ref# 656

Introduction: In this Unit, we will study the historical development of the Periodic Table as it stands today and the Modern Periodic Law. We will also learn how the periodic classification follows as a logical consequence of atoms. Fi... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Importance and Snapshot of Classification of Elements and Periodicity in Properties - Study ref# 657

Following sections must be covered to understand the Classification of Elements and Periodicity in Properties: 1. Why do we need to Classify Elements? 2. Genesis of Periodic Classification 3. Modern Law and the present form of the Peri... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Target Setup for Classification of Elements and Periodicity in Properties - Study ref# 658

Student requires to achieve the following milestones to get better grip over Classification Of Elements And Periodicity In Properties. The milestones / targets are as follows:-Starting Point: Days 0Test TypeAppear on TestTarget TestsS... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Study ref# 1262

Write the atomic number of the elements present in the third period and seventeenth group of the Periodic Table. Answer: General configuration for 17th group elements is. In the third period, the principal quantum number for valence shell is... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Study ref# 1264

What does atomic radius or ionic radius mean to you? Answer: Atomic radius Atomic radius means size of the atom. It can be measured by X-ray or other spectroscopic methods. In case of non-metals, it is called covalent radius and if the element ... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Study ref# 1265

What do you understand by isoelectronic species? Name a species that will be isoelectronic with each of the following atoms or ions. (i) (ii)Ar (iii) (iv)Rb+ Answer: Isoelectronic species have the sam... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Study ref# 1266

Consider the following species: and (a) What is common in them? (b) Arrange them in order of increasing ionic radii. Answer: (i) Find number of electrons in each ion. For each positive charge remove one electron and for each neg... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Study ref# 1269

The first ionization enthalpy values (in kJ mol-1) of group 13 elements are B Al Ga In TI 801 557 579 558 ... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Study ref# 1270

Would you expect the second electron gain enthalpy of O as positive, more negative or less negative than the first? Justify you answer. Answer: When an electron is added to oxygen a... read more

NEET - Grade 11 - Chemistry - Classification of Elements and Periodicity in Properties - Study ref# 1274

Nitrogen has positive electron gain enthalpy whereas oxygen has negative. However, oxygen has lower ionization enthalpy than nitrogen. Explain Answer: EC of Nitrogen has stable configuration because p-orbital is half-filled. Therefore, ... read more