Which element is a non metal with no electron affinity and is used in scuba diving? and is has a full valnce?

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sublevel....and the atomic mass is less than that of the elemt qith 53 protns

2006-10-24 04:10:55 · 3 answers · asked by chingchang 1 in Science & Mathematics ➔ Chemistry

Helium is used instead of N2 for deep dives in tech diving.

2006-10-24 04:13:21 · answer #1 · answered by shiara_blade 6 · 0⤊ 0⤋

My 1st thought is Helium as above but that atomic number of 53 is throwing me off. That shouldn't have anything to do with it.

2006-10-24 11:29:41 · answer #2 · answered by The Cheminator 5 · 0⤊ 0⤋

Doesn't helium have only 2 protons? That is considerably less that 53 protons.

2006-10-24 11:52:10 · answer #3 · answered by A.Mercer 7 · 0⤊ 0⤋