19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The elements with atomic numbers 35, 53, and 85 are all ................
The element with the lowest atomic number that has a ground state electronic configuration of (n-1) d6ns2 is located in the
Element having electronic configuration 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d10, 5s2, 5p3 belongs to the group in the periodic table
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
The number of elements present in fifth period of Periodic Table is
The element with atomic number 36 belongs to ........block in the Periodic Table.
Which of the following atom has largest size
In comparison to the parent atom, the size of the
Which one is the correct order of the size of the iodine species.
Which of the following ions has the smallest radius?
When a chlorine atom becomes chloride ion, its size
Which of the following pairs has almost the same atomic radii?
Identify the correct order of the size of the following
Which one of the following ions has the highest value of ionic radius?
Atomic radii of F and Ne, in Å, are given by
Among 3rd-row elements atomic size is maximum for
Which of the following order is correct for the size of Fe3+, Fe, and Fe2+?
The ions O2–, F–, Na+, Mg2+and Al3+are isoelectronic. Their ionic radii show
The correct order of the sizes of C, N, P, S, 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 ionic size of N3–, Na+, F–, Mg2+ and O2–is:
Arrange the following elements in the order of increasing atomic size Cl, S, P, Ar
The single covalent radius of P is 0.11 nm The single covalent radius of Cl will be :
In isoelectronic species of Mg2+, N3–, Al3+, the order of decreasing ionic radii will be
Identify the correct order in which the ionic radius of the following ions increases (I) F– (II) Na+ (III) N3–