Responses
Helium atoms have valence electrons in the first energy level, while atoms of the other elements in the group have valence electrons in the second energy level.
Helium atoms have valence electrons in the first energy level, while atoms of the other elements in the group have valence electrons in the second energy level.
Helium atoms have 2 valence electrons, while atoms of the other elements in the group all have 8 valence electrons.
Helium atoms have 2 valence electrons, while atoms of the other elements in the group all have 8 valence electrons.
Helium atoms have 2 electrons, while atoms of the other elements in the group all have 18 electrons.
Helium atoms have 2 electrons, while atoms of the other elements in the group all have 18 electrons.
Helium atoms have a full outer energy level, while atoms of the other elements in the group do not have a full outer energy level.
1 answer
The correct response is:
Helium atoms have valence electrons in the first energy level, while atoms of the other elements in the group have valence electrons in the second energy level.
This is because helium (He) has its two valence electrons in the first energy level (1s²), while the other noble gases (like neon, argon, etc.) have their valence electrons in the second energy level (and higher). This distinction in energy levels makes helium unique among the noble gases.
