Completar frases Noble gases properties- fill in the blankVersión en línea review the noble gases por Diana De La Torre 1 The density of the noble gases down the grou p 2 the melting point of the noble gases down the grou p 3 the boiling point of the noble gases down the grou p 4 All of the noble gases have outer shell s 5 Neon has electrons in tota l 6 Argon has valance electron s 7 Helium has valance electron s 8 The noble gases are , which means that they are found by themselves . 9 is used in balloons because it is less dense than air .
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