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because a group of elements in the Periodic Table behave in a single manner.they have a similar kind of physical properties,i can't surely tell about the chemical properties but in some exceptions these chemical properties are also same.
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∙ 13y ago
Wiki User
∙ 11y agobecause the periodic table it basically the table of element meaning where all elements are named
Wiki User
∙ 14y agoElements with similar electron configurations are placed in the same group.
Wiki User
∙ 14y agoThose are called groups or families and they are placed there because they all react in a similar fashion.
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∙ 11y agoThe elements in the same group have the same number of valence electrons and hence similar chemical and physical properties.
Wiki User
∙ 9y agoElements in same period have same shells. The properties also vary systematically in periods.
Wiki User
∙ 7y agoThis is a consequence of the law of periodicity of chemical properties of elements.
Wiki User
∙ 11y agoBECAUSE of the properties
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Do fluorine and chlorine have the same chemical properties?
No. No two elements have the same chemical properties. However, the chemical properties of fluorine and chlorine are similar. Since they are similar, they are placed in the same group, group 17, on the periodic table.
Do the element Na and K belong to the same period or the same group?
The elements K and Na belong to the same group i.e. 1 of the periodic table. However they are separately placed in 4th and 3rd periods respectively.
Do elements in the same group have similar atomic numbers?
No. Elements in the same group have same number of valence electrons.
What are to two element that have properties similar to those of the element sodium?
Lithium and potassium has same properties as sodium.They are alkali metals.They are placed in group-1.The elements of the same group have same chemical properties. Li and K are the elements above and below Na in the period. So they have same properties as sodium.
Why is it that hydrogen is placed in the metal group?
Hydrogen is placed in the metal group because it only needs to lose one electron to be stable just like lithium, sodium, potassium etc It also has the same number of valence electrons as the rest of the elements in group 1a. :)
Why elements are place in a group?
Elements with similar electron configurations are placed in the same group.
What causes the propertiesof elements in a group to be simalar?
Same number of valence electrons cause same properties. The elements with same properties are grouped together. For example- the alkali metals are placed in group-1
How did Mendeleev discover a pattern of repeating properties in elements?
Mendleef arranged the elements in the increasing order of their atomic masses due to which elements having same properties were placed in the same group and there were few exceptions.
What is special about the elements in the same group?
elements are in the same group since they react similarly to other elements in that group.
What elements occupy the same group in the periodic group?
elements that share the same colum
Are k and calcium in the same family in the periodic table of elements?
K refers to potassium. it is placed in alkali metal family i.e. group 1. Calcium is placed in alkaline earth family i.e group-2.
Elements in a group have-?
Elements in group have same number of valence electrons. They also have same chemical properties.
Do fluorine and chlorine have the same chemical properties?
No. No two elements have the same chemical properties. However, the chemical properties of fluorine and chlorine are similar. Since they are similar, they are placed in the same group, group 17, on the periodic table.
Do the element Na and K belong to the same period or the same group?
The elements K and Na belong to the same group i.e. 1 of the periodic table. However they are separately placed in 4th and 3rd periods respectively.
What do all the same elements have in a group in common?
Same elements of group have same valency. They possess same chemical behaviour.
What is similar when elements have the same group?
Elements in the same group have similar physical and chemical properties.
Do elements in the same group have similar atomic numbers?
No. Elements in the same group have same number of valence electrons.
