19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Magnesium burns in air to produce MgO and …X… with …Y… flame. Here, X and Y refer to
Along the group, size and ionization enthalpy of the group II elements(s) … and … respectively.
The alkaline earth metals have smaller size than those of corresponding alkali metals, this is due to
The atomic and ionic radii of the alkaline earth metals are …A… than those of the corresponding alkali metals in the corresponding period Here, A refers to
Nature of bonding present in compounds of alkaline earth metals are
Ground state valence shell electronic configuration of barium is
Which of the following is not an alkaline earth metal?
Beryllium has …A… Property from rest of alkaline earth metals and show diagonal relationship with …B… Here, A and B refer to
What approximate amount of ATP is used by a resting human in 24 hours?
Which of the following statement (s) is/are correct? I. Sodium and potassium are found on same sides of cell. II. Sodium and potassium are present on opposite side of cell. III. Sodium is found in blood plasma and …
Which of the following ion is most abundant within cell fluid?
Sodium ions found primarily in which part of human body?
Which of the following elements(s) form stable superoxide?
Above 373K, the monohydrate sodium hydrogen carbonate becomes completely anhydrous and called as
Alkali metals are kept in kerosene oil. Which of the following reason (s) is/are correct regarding this statements?
Group I elements are collectively known as
s-subshell can accommodate maximum number of
The oxidation state of K in KO2 is …A… and the bonding type is …B… Here, A and B refer to
Alkali metal reacts with water vigorously to form hydroxides and dihydrogen. Which of the following alkali metals reacts with water least vigorously?
The nature of bonding in hydride of alkali metal is
Lithium halides are somewhat …A… It is because …B… value of polarization capability of lithium ion. Here, A and B refer to
Which of the following metal has high value of polarization?
Which of the following is correct metals regarding least and most powerful reducing agent among alkali metals?
Alkali metals dissolve in liquid ammonia and produces
When sodium is dissolved in liquid ammonia is solution of deep blue colour is obtained. The colour of solution is due to