Explanation:
<u>Periodic table is the tabular display of elements that are arranged by the increasing atomic number.
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Structure of the periodic table shows various periodic trends.
<u>Significance:
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The periodic table is very important because it gives an organized way to provide lots of information about the elements and how they can be related to one another. The table gives a systematic approach to study the elements and their properties. The table can also be used to predict the properties of the elements which have not been discovered yet.
Answer:
84%
Explanation:
Fossil Fuels Supply 84 Percent Of Worlds Electricity
A physical change is a change in the appearance of a substance.
It is a covalent bond. Whenever a compound uses such suffixes like mono, di, tri, tetra, and so on, it is a covalent compound- thus having covalent bonds.
