Tag: role

The men of steel

To all the men Who work till day’s end They get up early Leave the home, never been lazy To keep the family cozy No holiday No excuse The burden of responsibilities Makes the shoulder more strong Legs are ment to move, hold and strengthen Feet are the roots That nourish the family May be

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How does phosphorus form 5 covalent bonds?

The number of valence electrons in phosphorus is generally 5 and it requires 3 more electrons to complete its octet. but it has an empty d-sub shell in which its electrons can excite and increase its valency from 3 to 5. in the above picture you can easily understand in case of phosphorus , the

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Basics of chemical reactions and chemical equations.

Chemical Change The change which give rise to new substances with new properties that are totally different from the starting matter. 2H2 + O2     ———> 2H2O Chemical changes are normally accompanied by the following changes:- 1. change in state 2. Change in colour 3. Change in temprature 4. Evolution of gas Chemical reaction Representation

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