Question

Atomic symbol for helium atom with electronic configuration 1s2

Answer 1

Answer:

atomic symbol of helium is He

Explanation:

it's atomic no. is 2 and mass no. is 4

**special point= nucleus of helium atom is referred as alpha particle**

Answer 2

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❤.ELECTRONIC CONFIGURATION

• 1S2.

❤.ATOMIC SYMBOL

• He.