19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The correct arrangement of the elements in the order of decreasing ionization energies is
The electronic configurations of some atoms are given below, which of these should have the highest second ionization energy?
Lowest ionization potential in periods is shown by
Shielding of the nuclear charge by the inner core of……A…….does not increase. Here, A refers to
Correct order of radii is
Identify the correct order in which the ionic radius of the following ions increases (I) F– (II) Na+ (III) N3–
In isoelectronic species of Mg2+, N3–, Al3+, the order of decreasing ionic radii will be
The single covalent radius of P is 0.11 nm The single covalent radius of Cl will be :
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
Which of the following ions has the smallest radius?
Which one is the correct order of the size of the iodine species.
In comparison to the parent atom, the size of the
Which of the following atom has largest size
The element with atomic number 36 belongs to ........block in the Periodic Table.
The number of elements present in fifth period of Periodic Table is
An element ‘X’ belongs to the fourth period and fifteenth group of the Periodic Table. Which one of the following is true regarding the outer electronic configuration of ‘X’. It has
Element having electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d10, 5s2, 5p3 belongs to the group in the periodic table
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?