Groups, in the Periodic Table of elements, are elements that all have the same number of valance electrons, which in turn tells us a lot about the kinds of chemical reactions that these elements will or will not undergo.
I presume you mean the atoms in a periodic table group. They all have similar outside energy level arrangements of electrons.
Atoms in the same group have similar structures.
A bioisosterism is a relationship between bioisosteres, substituents or groups with similar physical or chemical properties that impart similar biological properties to a chemical compound.
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8a group is the group in which the atoms "try to be like."
why atoms of group 0 elements do not form ions
same group
Atoms in the same group have similar structures.
They have similar properties as well as levels of reactivity
Atoms of the elements in a group have the same number of electrons in their outer energy shells. This gives the elements similar Chemical Propetries.
atoms in the same group are similar. calcium is in group 2, so it's similar to Be, Mg, Sr, Ba and Ra. Most similar would be Mg or Sr, which are right above and below. all group 2 atoms share a similar electron configuration
number of valence electrons
A bioisosterism is a relationship between bioisosteres, substituents or groups with similar physical or chemical properties that impart similar biological properties to a chemical compound.
If the group of atoms are all the same, it is called a molecule. If the group of atoms are different, it is called a compound, assuming they are bonded in some way. Otherwise, it is just called a group of atoms.
Elements showing properties similar to oxygen would be those that are found in the same group as oxygen (group 6A, or 16). Those would be sulfur (S), and selenium (Se)
A seismic wave is a mechanical wave - similar to a sound. Basically, the energy of the wave is propagated by groups of atoms hitting into the next group of atoms.
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The atoms of the elements in the same group have the same number of valence electrons. This means that they react with other elements in a similar way. For example group 1. All the atoms in group 1 react with water and oxygen, so they have to be kept in paraffin-oil. Another example is group 18. They don't react with anything. The atoms of the same row have the same electron shells.