Which one the following sets of ions represents the collection of isoelectronic species?
K+ , Ca2+, Sc3+, Cl-
Na+ , Mg2+, Al3+, Cl-
K+ , Cl- , Mg2+, Sc3+
Na+ , Ca2+, Sc3+, F-
A.
K+ , Ca2+, Sc3+, Cl-
What is crystal lattice?
What is electrovalency?
What bond is present in MgCl2 molecules?
Two elements A and B have the electronic configuration as:
A = 1s22s22p63s2 and B = 1s22s22p5
Write the empirical formula of the substance containing A and B.
What type of bonding would you expect between:
(i) a metal and a non-metal
(ii) a non-metal and another non-metal?
Give reasons in one or two sentences for the observation that in their compounds non-metals form anions and not cations.
Out of Na and K, which will form a more stable ionic bond?
Which will have a greater lattice enthalpy: NaCl or MgO?
Mock Test Series
