particle constist of :
2 protons and 2 nuetrons only
2 electrons , 2 protons and 2 nuetrons
3 electrons and 4 protons
2 protons only
Option 1)
2 protons and 2 nuetrons only
Option 2)
2 electrons , 2 protons and 2 nuetrons
Option 3)
3 electrons and 4 protons
Option 4)
2 protons only