location of helium

[Sami Ryan 1G]

If helium is in the s-block, how come it's not right next to hydrogen on the periodic table and instead situated in the p-block area?

[Zechuan Rao 1K]

The periodic table is ordered this way because it shows the property of Nobel gas with fully filled orbital. It is not located in the p block, since the p only starts on the second period.

[William Huang 1K]

Although helium is on the right side of the periodic table which makes it seem like its in the p-block, it is not actually in the p block because the p subshell only exists at or after n=2, meaning that it is placed there to demonstrate that for helium, the shell has been completed.

[Noa Popko 3I]

Even though helium is part of the s-block, it is put on the very right side of the periodic table because it shares a lot of properties with the noble gases, most notably being that it has a full shell.

[Sidharth Paparaju 3B]

It is part of the s-block since its "second electron" will still be in the 1s orbital; however, it is a noble gas and noble gases are placed in the last group on the periodic table (its more of a way of organizing the table).

[Erin Woolmore 1C]

Helium can only hold 2 electrons in its one orbital, so it appears in the same group as the noble gases to show how its valence shell is completely full.