Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202012 Oct 2020Evening ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

What is the position of elements La ( Z =57) and Ce ( Z =58) respectively in the long form of periodic table?

Options

  1. ALa = Group-3, Period-6 Ce = Group-3, Period-6
  2. BLa = Group -4 , Period-7 Ce = Group-5, Period-7
  3. CLa = Group -3 , Period-7 Ce = Group-3, Period-6
  4. DLa = Group-3, Period-6 Ce = Group-3, Period-7

Correct answer

A. La = Group-3, Period-6 Ce = Group-3, Period-6

Step-by-step solution

Zn ²⁺ 3 ~d ¹⁰ (No unpaired d-electron) Zn forms colourless compounds in +2 oxidation state.

Practice Classification of Elements and Periodicity in Properties on Quantrex Academy →

More from Classification of Elements and Periodicity in Properties

Which of the following is an INCORRECT match? 2026Match List-I with List-II: List-I (Element-Atomic number) List-II (Position in periodic table) (a) Ra – 88 (i) 4^ th period, 13^ th group (b) Ga – 31 (ii) 6^ th period, 6^ th group 2026Which element from following has positive electron gain enthalpy? 2026Which of the following elements belongs to group 2 and sixth period of periodic table? 2026Identify the most electronegative element by the following. 2026Identify increasing order of acidity for following diprotic acids in aqueous solutions. 2026Identify the group of periodic table that contains element Astatine. 2026What happens to the size of atoms in p-block elements when we move from left to right in the same period? 2026 Full Classification of Elements and Periodicity in Properties list All MHT CET PYQs