;need the same number of electrons to fill their valece shells
;have the same number of valence electrons
Because the have the same number of valence electrons.
All these metals have one valence electron.
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Elements in the same group (column) have the same properties. All the elements in group one have similar properties. All the elements in group two have similar properties. And so on...
a group of elements that have similar properties are arranged one on top of the other on the periodic table. These groups are also called families
Group 1 have one valence electron. The elements in Group 2 have two. The elements in Group 17 have seven valence electrons, and Group 18 elements have eight. Because the valence electrons within a family are the same, the elements in that group have similar properties.
Any element in the alkali metal group would have similar chemical properties, for example they all react easily to water.
You would see which group the element was in and then replace it with another element from the same group, as all elements in a group have similar properties. For example you could replace Sodium with Potassium as they are both in Group 1.
Elements in the same group (column) have the same properties. All the elements in group one have similar properties. All the elements in group two have similar properties. And so on...
a group of elements that have similar properties are arranged one on top of the other on the periodic table. These groups are also called families
Group 1 have one valence electron. The elements in Group 2 have two. The elements in Group 17 have seven valence electrons, and Group 18 elements have eight. Because the valence electrons within a family are the same, the elements in that group have similar properties.
Iron , cobalt and Nickel families of periodic table show the similar properties. these families are in three different columns but are considered as one group.
They have the same number of valence electrons which, in general, gives them similar oxidation numbers and other similar chemical and physical properties. The similarities are most pronounced in the groups at either side of the standard periodic table, and are least pronounced for the transition and rare earth elements.
By elements being similar, I assume you mean elements of the same group being similar rather than all elements in general. Elements of the same group are similar in terms of chemical properties because they share a similar electron configuration. For instance group one of the periodic table, the alkali metals, has only one electron in its outermost unfilled orbital. Because chemical reactions are dependent on the exchange and sharing of electrons, the similarity of electron configuration in elements of a group results in them having similar properties. For instance, the alkali metals are all soft and extremely reactive.
Any element in the alkali metal group would have similar chemical properties, for example they all react easily to water.
You would see which group the element was in and then replace it with another element from the same group, as all elements in a group have similar properties. For example you could replace Sodium with Potassium as they are both in Group 1.
A group contains elements having similar properties because of the same number of valence electrons present in the atoms of those elements. So, of example if you take group one containing Lithium, Sodium, Potassium, etc, they all have similar properties because of having the same valency (+1) .
There is no fully objective answer to this question. Many chemists would consider that two lanthanide elements with atomic numbers differing by only one would be likely to qualify. Another possibility is the pair zirconium and hafnium. These are very similar in most chemical characteristics but differ greatly in electron capture tendencies in nuclear reactors.
Elements in the same group have similar properties because they have the same number of electrons in their outermost shell.
The elements in a group, also called a family, have similar properties, one of which is the same number of valence electrons. This accounts for why the elements in a group have similar properties.