helium is in row 1 (or better period 1)
Hydrogen has atomic number 1 whereas helium's is 2.
The row number describes the period. It signifies the number of shells.
True. Row number on the periodic chart will be the same as the shell number.
Helium has 2 valence electrons. Being in Group 18 of the periodic table, helium is a noble gas and has a full outer electron shell.
helium is in the family of noble gases according to the periodic table
Hydrogen has atomic number 1 whereas helium's is 2.
liquid, and gas.
gaseous state.
Helium is an odorless gas.
-268.93 °C
Helium's chemical symbol is He.
It is often referred to as the row header or row heading or row number.
helium is a colourless odourless gas
Helium is a gas at room temperature.
heliums period address is 11.09
The row number describes the period. It signifies the number of shells.
It is the number to the left of the row. For example, the first row heading is "1."