Match List- I with List- II . List- I Electronic configuration of elements List- II Δ i H in kJ mol - 1 a 1 s 2 2 s 2 p 801 b 1 s 2 2 s 2 2 p 4 q 899 c 1 s 2 2 s 2 2 p 3 r 1314 d 1 s 2 2 s 2 2 p 1 s 1402 Choose the most appropriate answer from the options given below:

a → q , b → r , c → s , d → p

a → p , b → r , c → s , d → q

a → p , b → s , c → r , d → q

a → s , b → p , c → q , d → r

For electron gain enthalpies of the elements denoted as Δ eg H , the incorrect option is :

Δ eg H ( Te ) < Δ eg H ( Po )

EASY

JEE Main

IMPORTANT

Earn 100

The elements with atomic numbers $101$ and $104$ belong to, respectively:

57.5% studentsanswered this correctly

Important Questions on Classification of Elements and Periodicity in Properties

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 4 September 2020 Shift 1>Q 28

The ionic radii of

O^{2 -}, F^{-}, {Na}^{+}

and

{Mg}^{2 +}

are in the order:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 3rd April 2016>Q 29

Which of the following atoms has the highest first ionization energy?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 3 September 2020 Shift 2>Q 30

The five successive ionization enthalpies of an element are

800, 2427, 3658, 35024 32824 kJ {mol}^{- 1}

. The number of valence electrons in the element is:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 3 September 2020 Shift 1>Q 31

The atomic number of the element unnilennium is :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 27 July 2021 Shift 2>Q 32

The CORRECT order of first ionisation enthalpy is:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 27 August 2021 Shift 2>Q 33

The correct order of ionic radii for the ions,

P^{3 -}, S^{2 -}, {Ca}^{2 +}, K^{+}, {Cl}^{-}

is :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 26 Feb 2021 Shift 1>Q 34

Match List- $I$ with List- $II$ .

	List- $I$ Electronic configuration of elements		List- $II$ $Δ_{i} H$ in $kJ {mol}^{- 1}$
$(a)$	$1 s^{2} 2 s^{2}$	$(p)$	$801$
$(b)$	$1 s^{2} 2 s^{2} 2 p^{4}$	$(q)$	$899$
$(c)$	$1 s^{2} 2 s^{2} 2 p^{3}$	$(r)$	$1314$
$(d)$	$1 s^{2} 2 s^{2} 2 p^{1}$	$(s)$	$1402$

Choose the most appropriate answer from the options given below:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Classification of Elements and Periodicity in Properties>JEE Main - 25 July 2021 Shift 2>Q 35

The ionic radii of $F^{-}$ and $O^{2 -}$ respectively are $1.33$ $A$ and $1.4 A$ , while the covalent radius of $N$ is $0.74 A$

The correct statement for the ionic radius of $N^{3 -}$ from the following is :

The elements with atomic numbers 101 and 104 belong to, respectively:

Important Questions on Classification of Elements and Periodicity in Properties

Learn and Prepare for any exam you want !

The elements with atomic numbers $101$ and $104$ belong to, respectively: