What is the rule of modern periodic table?
Periodic Table: It is the table of chemical elements arranged in order of atomic number such that elements with similar atomic structure appear in the vertical columns. Modern periodic law: The Modern periodic law states “The chemical and physical properties of elements are a periodic function of their atomic numbers”.
What is on a periodic table?
Periodic table, in full periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus. …
What are 3 trends in the periodic table?
Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character. Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element’s properties.
What is the atomic radii trend?
Periodic Trend The atomic radius of atoms generally decreases from left to right across a period. Within a period, protons are added to the nucleus as electrons are being added to the same principal energy level. These electrons are gradually pulled closer to the nucleus because of its increased positive charge.
How do you know what has the highest electron affinity?
Electron Affinity Trends Therefore, elements with the highest electron affinity in the top right corner of the periodic table.
Which one N or O has more electron affinity?
Answer: Oxygen has more electron affinity because Nitrogen gains more stability by attaining partial configuration.
Which has more electron affinity oxygen or chlorine?
The first electron affinity of oxygen (-142 kJ mol-1) is smaller than that of sulphur (-200 kJ mol-1) for exactly the same reason that fluorine’s is smaller than chlorine’s. As you might have noticed, the first electron affinity of oxygen (-142 kJ mol-1) is less than that of fluorine (-328 kJ mol-1).