19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which one of the following is not a chalcogen?
Atomic to IUPAC nomenclature, the name of element having atomic number 101 is
According to IUPAC nomenclature, the name of element having atomic number 116 is
Group I elements of modern periodic table are called
ns and ns outermost electronic configuration belongs to the
Metals are good conductors of heat and….A….Here, ‘A’ refers to
The elements having characteristics of both metals and non-metals is/are termed as
The element with atomic number 57 belongs to
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