by Rajan Gupta | Aug 28, 2020 | Metals
Metals are also called electropositive elements because the metal atoms form positively charged ion by losing electrons. Following are the important chemical reactions of metals which takes place due to the electropositive character of metals. 1. Reaction of Metals...
by Rajan Gupta | Aug 28, 2020 | Metals
Metals are malleable:- All the metals can be beaten into thin sheets with a hammer e.g. gold, silver aluminium etc. Uses of Aluminium Foil: It is used for packing food items such as chocolates, biscuits, medicines, cigarettes etc. it is also used for making milk...
by Rajan Gupta | Aug 28, 2020 | Metals
The Number of electrons lost by a metal is known as the valency of the metal. For example: 1. One atom of sodium loses 1 electron to form a positive sodium ion (Na+), so sodium is a metal Na → Na+ + e- Here because an atom of sodium loses 1...
by Rajan Gupta | Aug 28, 2020 | Metals
There are more than 115 elements known at present and these can be divided into two main groups: Metals Metals are the elements which can form positive ions by losing electrons. For example, Na is a metal because it can form positive ion (Na+) ion by losing an...
by abhishek | Aug 28, 2020 | Sexual Reproduction
The flowering plants such as sunflower, marigold, wheat, maize, rice, mustard reproduce by sexual reproduction method. These plants contain male reproductive organs (stamen) and female reproductive organs (carpel) for the production of male gametes pollens and female...
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