Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- Which of the following statements are not correct ? A. The electron gain enthalpy of F is more negative than that of Cl. B....
- The number of s-electrons present in an ion with 55 protons in its unipositive state is
- Which of the following represents the correct order of metallic character of the given elements?
- Inert gases have positive electron gain enthalpy. Its correct order is
- Given below are two statements : Statement-I : The decrease in first ionization enthalpy from B to Al is much larger than that...
- Match List-I with List-II. List-I (Atomic number): A. 37 B. 78 C. 52 D. 65 List-II (Block of periodic table): I. p-block II....
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason(R). Assertion (A) : The...
- The correct increasing order of the ionic radii is :
- Which is the correct order of ionic sizes ? (Atomic Number : Ce = 58, Sn = 50, Yb = 70 and Lu = 71)
- According to the Periodic Law of elements, the variation in properties of elements is related to their
- The number of d-electrons retained in Fe^ 2+ (At.no.of Fe = 26 ) ion is
- A reduction in atomic size with increase in atomic number is a characteristic of element of
- The atomic numbers of vanadium (V), Chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23 , 24,25 and 26 . Which one of...
- Which one the following sets of ions represents the collection of isoelectronic species?
- Which one the following ions has the highest value of ionic radius?
- Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in
- The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is
- The decreasing values of bond angles from NH_3 (106°) to SbH_3 (101°) down group-15 of the periodic table is due to
- Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which...
- The set representing the correct order of ionic radius is :
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