Modern periodic table, periodic properties

The periodic table enlists all the elements that are known to man, all these are arranged in an increasing order of atomic number and recurrent chemical properties. According to the modern periodic table, the physical and chemical properties of the elements represent the periodic functions of their atomic numbers.  The periodic table, also referred to […]

Iron is an atomic number 26 element with the symbol Fe. It is a transition metal from the first transition series of the periodic table’s group 8. It is the most abundant element on Earth in terms of mass, just ahead of oxygen (32.1 per cent vs 30.1 per cent, respectively), and it makes up

Copper is a chemical element that is golden reddish in physical appearance. The term copper has been derived from the Latin word cuprum. It belongs to group 11 and period 4 in the modern periodic table. It is a d-block element. It has an atomic number of 29 while an atomic mass of 63.54u. This

Aluminium  is said to be similar to silver having high propensity to reflect light. It is ductile, soft, and non-magnetic. Aluminium has only one stable isotope,  Al27which is quite common, making it the twelfth most abundant element in the Universe. In radiodating, the radioactivity of Al26 is employed.Aluminium is a post-transition metal in the boron

Isotopes are members of an element’s family that have the same number of protons but differ in the number of neutrons they have. The number of protons in an element’s nucleus determines its atomic number on the Periodic Table. Carbon, for example, has six protons and has atomic number 6. In nature, carbon is found

Non-stoichiometric compounds are chemical compounds, usually typically solid inorganic compounds, whose elemental composition cannot be represented by a ratio of small natural numbers; most frequently, such materials lack a small percentage of atoms or have an abnormally dense lattice work. Additionally, non-stoichiometric molecules are referred to as berthollides (as opposed to the stoichiometric compounds or

Previously, scientists assumed that the properties of elements are periodic functions of their atomic masses, and this assumption was proven incorrect. This assumption led Mendeleev to arrange 63 elements in two vertical columns called groups, and two horizontal rows called periods, in accordance with his calculations. Due to the inability of this method to explain

Periodic trends refers to the specific patterns that are present in the periodic table and it describes different properties of an element, including their size and their electronic properties. Some very common periodic trends include: atomic radius, electronegativity, ionization energy, electron affinity. Periodic trends arise from the arrangement of the elements in the periodic table;

What are metals? Approximately three-quarters of all known elements on Earth, metals are substances or minerals usually having a lustre and high electrical conductivity, readily losing electrons to form positive ions(cations). Aluminium is an example of metal. General physical and chemical properties of metals: Lustrous High thermal and electrical conductivity High malleability (can be beaten

Halogens are found in Group 17 (Halogens) of the periodic table. Halogens are extremely reactive non-metals with properties strikingly similar to those of metals. Halogens are members of group 17 of the periodic table (In Greek, the word ‘halo’ represents salt, while ‘genes’ means producing, and so collectively, it stands for salt-producing). The components in