EASY
Earn 100

Element with valence shell electronic configuration as (n-1)d5 ns1 is placed in which of the following group and block of elements?

16.67% studentsanswered this correctly

Important Questions on Classification of Elements and Periodicity in Properties

EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The last element of the p- block in 6th period is represented by the outermost electronic configuration:
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The elements with atomic numbers 101 and 104 belong to, respectively:
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
Which of the following does not exist?
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
An element of atomic number 118 would be a/an __________
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The 71st electron of an element X with an atomic number of 71 enters the orbital:
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
Which among the following elements is a metalloid?
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The set that contains atomic numbers of only transition elements, is :
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The electron configuration of Fe3+ is (atomic number of Fe=26)
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The element Z=114 has been discovered recently. It will belong to which of the following family/group and electronic configuration?
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The electronic configurations of bivalent europium and trivalent cerium are:
(atomic number: Xe=54 , Ce=58 , Eu=63)
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
To which group of the periodic table does an element having electronic configuration [Ar]3d54 s2 belong?
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements

Consider the following radioactive decays

I. U92⟶-α90Th and

II. 90Th⟶-αRa88

In which case group of parent and daughter elements remains unchanged.

MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
Among the given configurations, identify the element which doesn't belong to the same family as the others?
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
Decrease in ionic size in a period is observed in
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The element with outer electronic configuration (n-1)d2ns2, where n=4, would belong to
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements

Match the element in column I with that in column II.

  Column-I   Column-II
(a) Copper (p) Non-metal
(b) Fluorine (q) Transition metal
(c) Silicon (r) Lanthanoid
(d) Cerium (s) Metalloid

Identify the correct match :

EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
Which of the following species is iso-electronic with Cr?
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements

The correct match among the following is

(a) Lithium, Sodium, Potassium            (i) Alkaline earth metals
(b) Beryllium, Magnesium, Calcium      (ii) Semi-metals
(c) Oxygen, Sulphur, Selenium             (iii) Alkali metaIs
(d) Silicon, Germanium, Arsenic           (iv) Chalcogens

EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
The electronic configurations of Eu (Atomic no. 63), Gd (Atomic no. 64) and Tb (Atomic no. 65) are:
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronic Configurations and Types of Elements
What would be the IUPAC name for the element with the atomic number 120?