19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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 order is correct for the size of Fe3+, Fe, and Fe2+?
Among 3rd-row elements atomic size is maximum for
Atomic radii of F and Ne, in Å, are given by
Which one of the following ions has the highest value of ionic radius?
Identify the correct order of the size of the following
Which of the following pairs has almost the same atomic radii?
When a chlorine atom becomes chloride ion, its size
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?
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