s-Block ElementsHard
Question
Sodium has, as compared to potassium :
Options
A.less electronegativity
B.more ionisation potential
C.larger atomic radius
D.lower melting point
Solution
For (A), (C) and (D) refer above question.
(D) Sodium is smaller than potassium in size. The valence shell electron is tightly bound with nucleus and therefore, more energy is required to eject out the electron. So sodium has higher ionisation energy than that of potassium.
(D) Sodium is smaller than potassium in size. The valence shell electron is tightly bound with nucleus and therefore, more energy is required to eject out the electron. So sodium has higher ionisation energy than that of potassium.
Create a free account to view solution
View Solution FreeMore s-Block Elements Questions
Among the following components of cement which is present in highest amount ?...Consider the following statements, S1 : KO2 is CO and CO2 abrosber, and O2 emitter. S2 : CaCl2. 6 H2O is widely used for...Sodium sulphate is soluble in water but barium sulphate is sparingly soluble because :...A solution of sodium in liquid ammonia is strongly reducing and highly conducting due to the presence of...Gypsum on heating at a temperature of 393 K yields :...