The P-Block Elements
5 Board Chemistry previous year questions on The P-Block Elements — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
Statement - 1: First ionization energy Ge is greater than Si
Statement - 2: First ionization energy Pb is greater than Sn
Statement - 1 is false Statement - 2 is true
As we move down the group, the ionisation energy decreases, due to increase in atomic size, thereby, increasing the distance of the electrons from the nucleus. The first ionisation energy of lead is slightly higher than that of tin. The reason is due to lanthanide contraction.Due to higher charge density, the outer electrons are attracted more by the nucleus in lead and hence, the ionisation energy is more in the case of lead.
C > Si > Ge > Pb > Sn
The atomic number of the element with least melting point in group-14 is
(JEE Mains 23/01/2025 ,Shift -2)
Options are free to see. Unlock the correct answer and full explanation with Pass.
Consider the following elements In , Tl , Al , Pb , Sn and Ge .
The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are
[JEE Main 2025, 28 Jan (Shift 1)]
Options are free to see. Unlock the correct answer and full explanation with Pass.
The correct statements from the following are :
(A) \({\mathrm{Tl}}^{3+}\) is a powerful oxidising agent.
(B) \({\mathrm{Al}}^{3+}\) does not get reduced easily.
(C) Both \({\mathrm{Al}}^{3+}\) and \({\mathrm{Tl}}^{3+}\) are very stable in solution.
(D) \({\mathrm{Tl}}^{+}\) is more stable than \({\mathrm{Tl}}^{3+}\).
(E) \({\mathrm{Al}}^{3+}\) and \({\mathrm{Tl}}^{+}\)are highly stable.
Choose the correct answer from the options given below:
Options are free to see. Unlock the correct answer and full explanation with Pass.
The correct order of melting point of 14th group elements.
(Memory Based JEE Mains 24/01/2025 ,Shift -2)
Options are free to see. Unlock the correct answer and full explanation with Pass.
Practice more Board Chemistry PYQs
Browse every Chemistry chapter, or explore the full Board question bank.
All Chemistry chapters →