H and He are in the first period. Li Be, B, C, N, O, F, Ne are in the second and so on.
A period is one row across on the Periodic Table
Elements in the same period has same number of valence shells.There are 7 periods in Periodic Table.
All the elements in third row have 3 shells. The electron enters in the third shell for all the groups.
a family is a column of elements a period is a row of elements
In the Periodic Table Of Elements, elements are not necessarily similar under the same period. But, they are similar under the same group. they only have one thing in particular they have the same amounts of shells for the atoms
A group of 17 elements is called a period in the periodic table. This period corresponds to the number of electron shells in an atom within that group. Elements in the same period have the same number of electron shells.
Elements in same period have same shell. The electron enters outermost shell.
Period 4 and period 5 of the periodic table have the same number of elements. There are 18 elements in each period. While some elements in period 4 are calcium, iron, and zinc, elements in period 5 are tin, antimony, and iodine.
Elements in the same period has same number of valence shells.There are 7 periods in Periodic Table.
All the elements in third row have 3 shells. The electron enters in the third shell for all the groups.
All elements in the same horizontal row of the Periodic Table are in the same period, there are 7 periods.
a family is a column of elements a period is a row of elements
all elements in a period all have the same amount of shells example: all elements in period 1 has only 1 shell all elements in period 2 has 2 shells so the period number is the same as the number of shells in that period
the period
the period
Yes, elements in the same period on the periodic table have the same number of electron shells. This results in similar chemical properties among the elements in the same period, as they have comparable electron configurations.
On the Periodic table, horizontal rows are given the technical term "periods", while vertical columns are called "groups". Elements in the same period are similar in that they have the same number of energy levels.
In the Periodic Table Of Elements, elements are not necessarily similar under the same period. But, they are similar under the same group. they only have one thing in particular they have the same amounts of shells for the atoms