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Difference between Metals and Nonmetals

Difference Between Metals, Nonmetals and Metalloids

October 25, 2019
9

Elements which are present to the left of the periodic table are said as metals, though elements which are present to the far right of the periodic table are called as nonmetals. Semimetals or Metalloids are present just to the right of metals and possess properties of metals as well as nonmetals. Hydrogen (H) element is an exception, which is the first element of the periodic table and at normal temperature and pressure hydrogen shows the properties of a nonmetal. Here, we will learn about …

Atoms Present in One Water drop

Number of Atoms and Molecules Present in one water Drop.

October 25, 2019
10

Did you ever think how many atoms are in a drop of water or how many molecules are in a single water drop? The answer will depend on your definition of the volume of a water droplet. The average volume of a water drop is precisely 0.05 mL (20 drops per millilitre). It turns out that there are over 1.5 sextillions (1^21) molecules in a water drop and more than five sextillion atoms per water droplet. Water Chemical Formula. To …

Grouping Elements in Periodic Table

Grouping of Elements in the Periodic Table.

October 25, 2019
2

A Russian chemist Dmitri Mendeleev, in the late 19th century, published his first attempt at grouping the chemical elements according to their atomic weights. There were only about 60 elements known during that the time, later Mendeleev observed that when the elements are organized according to their weight, certain types of elements occurred in regular periods or intervals. Today, approximately 150 years later, chemists officially recognized 118 elements, including four newcomers in the year 2016, and still use Mendeleev’s periodic …

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