Please answer three of these questions

Enter the following formula for a specific isotope of helium. He X X He o Part 2 (0.7 point) See Hin The above isotope of helium is also referred to as an alpha particle, so in nuclear physics, it is often represented by the symbol of the lowercase Greek letter alpha. Using the Greek letter notation enter the following symbol for the isotope. An ionic isotope of iron(III) can be written as an isotope with a charge. Enter the following formula of this ionic isotope using the proper notation. 56Fe3+ 26