19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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 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 :
Identify the correct order in which the ionic radius of the following ions increases (I) F– (II) Na+ (III) N3–
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
Which one of the following order is correct for the first ionization energies of the elements?
Ionization potential for a noble gas is
The highest first ionization potential is of
A neutral atom will have the lowest ionization potential when electronic configuration is
The ionization energy will be maximum for
The correct order of second ionization potential of C, N, O and F is
Which of the following isoelectronic ions has the lowest ionization energy?
The outermost electronic configuration of the most electronegative element is
Which one of the following ions has electronic configuration Ar 3d ? (Atomic numbers: Mn = 25, Fe = 26, Co = 27, Ni = 28) (CBSE AIPMT 2010) (a) Co (b) Ni (c) Mn (d) Fe
The property of attracting electrons by the halogen atoms in a molecule is called (JCECE 2010)
Generally, the first ionization energy increases along a period. But there are some exceptions. One which is not an exception is (KCET 2010)
Among the following the third ionization energy is highest for (AMU 2010)