Question

An element has $35$ electrons. In which period of the periodic table is this element located?

Answer 1

Hint: As we know that in chemistry, periodic tables play a vital role. In the periodic table there are totally \[118\] elements. In the periodic table there are totally \[18\] columns and \[7\] rows. The columns are called groups. Hence, \[18\] groups in the periodic table. The rows are called periods. Hence, totally \[7\] period in the table.
The electrons in the atom are filled by the lower energy level to the higher energy level. In modern periodic table elements are arranged in the table depending on the atomic number. In this way only periods and rows are arranged in the modern periodic table.

Complete answer:
As we know, the atomic number of bromine is \[35\]. The symbol of bromine is \[Br\]. The mass number of bromine is \[79\]. The number of electrons in bromine is \[35\]. Bromine is located in \[{17^{th}}\] group and \[{4^{th}}\] period in the periodic table.
According to the above discussion, we conclude an element has $35$ electrons and this element located in the periodic table is \[{4^{th}}\].

Note:
In the world there are a lot of elements in various forms. For study and developing purposes, classification happens. Periodic table used to study the elements in easy form. If one new element is discovered, it means, based on the physical and chemical property we placed in the periodic table. The atomic number of the element is nothing but the number of electrons or number of protons. The mass number of the atom is nothing but the sum of the number of protons and number of neutrons. In general we move left to right metallic properties of the atom decreases. We move right to left and non-metallic property decreases.