19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Arrange the following elements in the order of increasing atomic size Cl, S, P, Ar
The correct order of ionic size of N3–, Na+, F–, Mg2+ and O2–is:
In which of the following pair, both the species are isoelectronic but first one is large in size than the second?
The correct order of the sizes of C, N, P, S, is
The ions O2–, F–, Na+, Mg2+and Al3+are isoelectronic. Their ionic radii show
The element with the lowest atomic number that has a ground state electronic configuration of (n-1) d6ns2 is located in the
The elements with atomic numbers 35, 53, and 85 are all ................
The electronic configuration of the element which is just above the element with atomic number 43 in the same group is ............
Which of the elements whose atomic numbers are given below, cannot be accommodated in the present set up of the long form of the periodic table?
The last element of the p-block in the 6th period is represented by the outermost electronic configuration.
The element with atomic number 57 belongs to
The elements having characteristics of both metals and non-metals is/are termed as
Metals are good conductors of heat and….A….Here, ‘A’ refers to
ns and ns outermost electronic configuration belongs to the
Group I elements of modern periodic table are called
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?
An atom has electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6, 3d3, 4s2, you will place it in
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