Question

what is the mass number of helium!​

Answer 1

Mass number : 4.002602 u

Atomic number: 2

Electrons per shell: 2

Symbol: He

this is your answer

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Answer 2

Answer:

$\huge\underline\mathcal \red{ᴀɴsᴡᴇʀ}$

ᴛʜᴇ ᴍᴀss ɴᴜᴍʙᴇʀ ᴏғ ʜᴇʟɪᴜᴍ ɪs 4

Explanation:

$\huge\underline{\overline{\mid{\bold{\pink{ItzMøøNBøY-}}\mid}}}$