Givè any 4 examples of chemical formula
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Chemical formulas describe the atoms involved in substances or compounds. Learn four types of formulas (Molecular, Empirical, Structural, Condensed structural) and examples of how each is used to explain compounds in unique ways

Chemical Formulas are a type of shorthand for representing the elements in a compound. ... Chemical symbols (Element symbols) from the periodic table are used for the individual elements e.g. H for hydrogen, C for carbon, O for oxygen, N for nitrogen, Ca for calcium and Na for Sodium.

Shriya can I get brilianest please

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

particle   p is an electron and particle q is a neutron