H1️⃣

#hydrogen #h #atomic number 1 #element 1 #first element #periodic table

1️⃣⚛️

#atomic number 1 #first element #simplest atom #proton #electron #nucleus #element 1

[0]

#array index #zero based #list index #code snippet #data access #first element

💻[0️⃣]

#zero based index #array index #list index #programming zero #first element #code index