Periodic properties is an important topic since questions from this area tend to be direct and easily scoring. They are mostly based on theoretical facts and already known data which makes getting answers and solving questions pretty easy. In short, it is one of the scoring areas in the chemistry paper both for JEE mains and JEE advanced. Let us first look at the number of questions that have come based on Periodic properties over the years.
The first and foremost thing you need to be aware is that in this topic, if your fundamentals are really strong then you can easily solve the questions. Otherwise it is going to be pretty difficult. The Chemistry text book of class 11th and 12th is a pretty good start to strengthen your fundamentals in this topic. Once the fundamentals are strong, even tricky questions can be solved with ease.
There are some things that a person can do so that he or she can be through in periodic properties of elements. First off try to remember the order of the elements of the periodic table. Trust me, it really helps. First 20 elements have to be known properly. It would be good if you could also remember the transition elements too. The reason why we learn the elements in order is for the easiness of writing electronic configurations. Once the atomic number is known, writing electronic configuration is pretty straightforward. The electronic configuration can be handy in many place throughout the paper.
Another thing we have to keep in mind for this chapter is to study the exceptions of the trends of periodic elements properly. Most the questions in the exam will be targeted towards your knowledge of the exceptions in periodic properties. So study those areas well.
The periodic properties have to be learnt properly. These include
- Atomic size
- Ionic size
- Ionization Enthalpy
- Electron Gain Enthalpy
- Acidic and Basic Character
Under these topic you have to learn about the factors affecting these properties, trends of these properties on the periodic table and exceptions to these trends on the periodic table. Other than these there are some important graphs too. For example, in the case of Ionization Enthalpy the variation of the Ionization Enthalpies of the 2nd period elements with respect to their atomic number is one such graph.
Another important topic is the diagonal relationship in the periodic table. Questions based on this topic are also pretty common.