Why do all elements of the same group have similar chemical properties?
Why do all elements inthesameperiod have different properties?
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21
all elements in the group has same properties due to same no. of electrons in its outermost shell
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9
Periodic Table,
We know that matter can exist in the form of elements, compounds and mixtures.
When elements were discovered a proper classification was required.
Dmitri mendeleev was the first person to classify the elements.He made a table which was quite similar to our modern periodic table.
He put a series of elements aside and saw some similarity between them and put them in a row .
Now let's jump from history to the answer,
The elements which are present at the same group have same chemical properties because they are arranged in a definite, understandable and in an easily accessible way.
Elements which are present in the same coloum of the periodic table have the same valency and are named based on certain circumstances.
like group 1 elements are called alkali metals and group 18, noble gases, these show the same property.
But there are tones of exceptions also.
Like you can see in the group 1,element hydrogen is an exceptional element it doesn't act like the alkali metal does but it is put at here for its 1 unpaired electron similarity.There are many other examples also.But I'm not discussing it now.
That's it for now
Hope it helped (●´ϖ`●)
We know that matter can exist in the form of elements, compounds and mixtures.
When elements were discovered a proper classification was required.
Dmitri mendeleev was the first person to classify the elements.He made a table which was quite similar to our modern periodic table.
He put a series of elements aside and saw some similarity between them and put them in a row .
Now let's jump from history to the answer,
The elements which are present at the same group have same chemical properties because they are arranged in a definite, understandable and in an easily accessible way.
Elements which are present in the same coloum of the periodic table have the same valency and are named based on certain circumstances.
like group 1 elements are called alkali metals and group 18, noble gases, these show the same property.
But there are tones of exceptions also.
Like you can see in the group 1,element hydrogen is an exceptional element it doesn't act like the alkali metal does but it is put at here for its 1 unpaired electron similarity.There are many other examples also.But I'm not discussing it now.
That's it for now
Hope it helped (●´ϖ`●)
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