Sample Problems on Periodic Table Trends
Question 1: What is meant by the electronic configuration of an element?
Answer:
An element’s electronic configuration is a symbolic representation of how its atoms’ electrons are arranged across different atomic orbitals. A standardised notation is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons present in the orbital expressed in superscript.
Question 2: Is it easier to remove an electron from sodium or aluminium?
Answer:
It doesn’t take much energy to extract one electron from a sodium atom in order to generate a Na+ ion with a filled-shell electron configuration. The second aluminium ionisation energy is bigger than the first, and the third is much higher.
Question 3: What is the penetration effect?
Answer:
The proximity of an electron in an orbital to the nucleus is referred to as penetration. It can be viewed as the relative density of electrons near an atom’s nucleus for each shell and subshell. Looking at the radial probability distribution functions, we can see that the electron density of s orbitals is higher than that of p and d orbitals.
Question 4: What is the effect on metallic character as we move in a periodic table?
Answer:
As we advance down the group, the metallic character rises because atomic size increases, resulting in easy electron loss. It, on the other hand, lowers as we move from left to right over time.
Question 5: What are some metallic characteristics?
Answer:
The qualities associated with the metals contained on the periodic table are referred to as metallic character. These characteristics include metallic shine, hardness, malleability, thermal conductivity, and others.
Periodic Table Trends
Article with the name “Periodic Table Trends” as the name suggests explores the trends and patterns in the property of elements while arranged in the modern-day periodic table. Scientists in the early days observed that while arranging the elements based on either atomic weight or atomic number, elements with similar properties automatically got arranged closer to each other. This article will explore the same thing with the modern-day lens and will tell you about all the trends in various properties such as atomic radius, valency, metallic or non-metallic characters, reactivity, boiling point, melting point etc. So, let’s learn about these trends in the properties of elements while arranged in the periodic table.