Question

Explain why the first period of the periodic table is exception
in case of
Number of electrons increase from 1 to 8 in each period​

Answer 1

Explanation:

The periodic table of elements has a total of 118 entries. Elements are arranged in a series of rows (periods) in order of atomic number so that those with similar properties appear in vertical columns. Elements in the same period have the same number of electron shells; moving across a period (so progressing from group to group), elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases. For example, the alkali metals lie in one group (Group 1) and share similar properties, such as high reactivity and the tendency to lose one electron to arrive at a noble-gas electron configuration.

Answer 2

Answer:

it is exception because it doesn't increases from one two eight it has only two element in this shell