19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Identify the electronic configuration of transition element.
Molybdenum metal is related to which block?
Manganese is related to which block of the Periodic Table?
Which one of the following pair of elements has similar properties?
Which one of the following is not a chalcogen?
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
Arrange the following atoms in order of increasing first ionization energy K, Cs, Rb, Ca
The element which has highest first ionization energy in the periodic table is
Correct order of first ionization potential among the following elements Be, B, C, N, O is
In a periodic table, on moving from left to right along a period, the metallic character of an element
Alkali metals in each period have
Amongst the elements with the following electronic configurations which one of them may have the highest ionization energy?
The bond enthalpy is the highest for
Which of the following has the highest ionization enthalpy?
The correct order of ionization energy of C, N, O, F is