19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
According to IUPAC nomenclature, the name of element having atomic number 116 is
Atomic to IUPAC nomenclature, the name of element having atomic number 101 is
Which one of the following is not a chalcogen?
Which one of the following pair of elements has similar properties?
Manganese is related to which block of the Periodic Table?
Molybdenum metal is related to which block?
Identify the electronic configuration of transition element.
Which of the following is not a Dobereiner’s triad?
The elements with atomic numbers 9, 17, 35, 53, 85 are all
Which pair has both members from the same period of Periodic Table?
An atom has electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6, 3d3, 4s2, you will place it in
An element with atomic number 21 is a
Which of the following represents an excited state of an atom?
The element having electronic configuration [Kr] 4d10, 4f14, 5s2, 5p6, 5d4, 6s2 belongs to
The electronic configuration of an element is 1s2, 2s22p6, 3s23p3. What is the atomic number of the element which is just below the above element in the periodic table?
The element whose electronic configuration is 1s2, 2s2, 2p6, 3s2 is
The transition elements have a characteristic electronic configuration which can be represented as
Without looking at the periodic table, select the elements of IIIA group of the periodic table (atomic numbers are given) :
Which of the following pairs has both members from the same group of periodic table
In the fourth period of the periodic table, how many elements have one or more 4d electrons?
Elements whose outer electronic configuration vary from ns2np1 to ns2np6 constitute
The periods in the Periodic Table are numbered from
The vertical columns in the Periodic Table are termed as
Atomic number is equal to the…. A…. Here, ‘A’ refers to
In 1913, Henry Moseley observed regularity in the characteries…A…of the elements. Here, ‘A’ refers to