Respuesta :
The number of valence electrons for a helium atom is 2. This can be confirmed by looking at the electronic configuration.
Helium atom:
Helium is placed in the noble gas series as it has certain properties of it. The atomic number of helium is 2. Thus, it has two electrons in its outermost shell but it has completely filled orbital.
Electronic configuration of He = 1s2
Thus, for drawing the electron dot structure, there are two valence electrons.
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