Download App

Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties2 Marks
Question
Justify the given statement with suitable examples- “The Properties of the elements are a periodic function of their atomic numbers”.
✓

Answer

The similarities in the properties arise due to the same distribution of electrons in the outermost orbitals or electronic configuration which depends upon the atomic number. The elements present in a group or period exhibit similar chemical properties which depend upon the atomic number.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Classification of Elements and Periodicity in Properties→Classification of Elements and Periodicity in Properties — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

A solution of silver nitrate was stirred with iron rod. Will it cause any change in the concentration of silver and nitrate ions?
→
Define hydrogen bond. Is it weaker or stronger than the van der Waals forces?
→
The first (IE1) and second (IE2) ionisation energies (kJ/ mol) of a new element designated by Roman numerals are shown below:
 
IE1
IE2
I
2372
5251
II
520
7300
III
900
1760
IV
1680
3380
Which of these elements is likely to be (a) a reactive metal, (b) a reactive non metal, (c) a noble gas, and (d) a metal that forms a binary halide of the formula, AX2?
→
  1. The standard electrode potential of two metals 'A' and 'B' are -0.76V and +0.34V respectively. An electrochemical cell is formed using electrodes of these metals.
  1. Identify the cathode and anode.
  2. Write the direction of flow of electrons.
  1.  HNO3 acts as oxidising agent while HNO2 can act as both oxidising as well as reducing agent, why?
→
Classify the following into elements, compounds and mixtures: water, tea, silver, steel, carbon dioxide and platinum.
→
In three moles of ethane (C2H6), calculate the following:
Number of moles of hydrogen atoms.
→
Given that $\Delta\text{H}=0$ for mixing of two gases. Explain whether the diffusion of these gases into each other in a closed container is a spontaneous process or not?
→
Conjugate acid of a weak base is always stronger. What will be the decreasing order of basic strength of the following conjugate bases?
$\text{OH}^–,\text{ RO}^–,\text{ CH}_3\text{COO}^–,\text{ Cl}^–$
→
Write the electronic configuration of the following ions:
  1. H-
  2. Na+
  3. O2-
  4. F-
→
The Ksp of Ag2CrO4 AgCl, AgBr and AgI are respectively, 1.1 × 10-12, 1.8 × 10-10, 5.0 × 10-13, 8.3 × 10-17, which one of the following salts will precipitate first AgNO3 solution is adding to a solution containing equal mole of NaCl, NaBs, NaI and Na2CrO4.
→