Explain why the following statements are wrong.
1.All groups contain both metals and non metals.
2.In group 1 reactivity decreases with an increase in the atomic number.
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1. it is false.
cause there are some specific groups which contains respective elements. For example, group 1 of alkali elements contains only metals. While growing 17 of halogen elements contains only non - metals
2. it is false
group is the group of alkali metals. And as we go down the group the elements shows increasing gradation in properties. For example, it is the property of alkali metal that when it reacts vigorously with water,it forms co-responding hydroxide with releasing hydrogen and heat energy. The amount of heat energy increases as we go down the group. i.e. from Li to Na and Na to K.
this is it.
do you got any questions
make sure to ask
cause there are some specific groups which contains respective elements. For example, group 1 of alkali elements contains only metals. While growing 17 of halogen elements contains only non - metals
2. it is false
group is the group of alkali metals. And as we go down the group the elements shows increasing gradation in properties. For example, it is the property of alkali metal that when it reacts vigorously with water,it forms co-responding hydroxide with releasing hydrogen and heat energy. The amount of heat energy increases as we go down the group. i.e. from Li to Na and Na to K.
this is it.
do you got any questions
make sure to ask
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