Chemistry Homework Help: Identifying Metals and Anomalous Density in Elements

In summary, the conversation discusses a question about identifying metals from a given table of elements, and another question about comparing the density of metals and non-metals and identifying an anomaly. The elements Silver, Lead, and Sodium are identified as metals, while Helium, Hydrogen, and Chlorine are non-metals. The experts suggest that Sodium may also be considered a metal and discuss the reasoning behind its lower density compared to other metals. They also suggest that Sodium may be the anomaly in the density comparison.
  • #1
Hybr!d
18
0
Hey Guys. I got this question with these 6 elements in this table

Silver = Metal
Helium = Noble Gas
Hydrogen = Non Metal
Chlorine = Halogen
Lead = Metal
Sodium = Alkali Metal

Now the question says

Which of these are metals?

I answered: Silver, Lead

But I am wondering about Sodium can it be in the answer?

Also another question states:

Comparing the Density of the metals and non metals, Which element represents an anomaly? Why?

Density (g mL^-1)

Silver = 10.5
Helium = 0.00017
Hydrogen = 0.00008
Chlorine = 0.00291
Lead = 11.3
Sodium = 0.97

This question I don't clearly understand and I hope someone can help me!
 
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  • #2
But I am wondering about Sodium can it be in the answer?
Sodium is a metal too.

Comparing the Density of the metals and non metals, Which element represents an anomaly? Why?

Density (g mL^-1)

Silver = 10.5
Helium = 0.00017
Hydrogen = 0.00008
Chlorine = 0.00291
Lead = 11.3
Sodium = 0.97

Metals:
Silver = 10.5
Lead = 11.3
Sodium = 0.97

Non metals:
Helium = 0.00017
Hydrogen = 0.00008
Chlorine = 0.00291

I don't see any anomality. Maybe they want you to answer sodium, but I don't see it as an anomality. It has a lower density than lead and silver because it has less protons and neutrons, which is the same to say mass, per unit of volume. I'm a beginner, I just tried to help. Wait for the experts.
 
  • #3
Pponte Yeh I thought Sodium was a metal thanks for that but the last question is really bugging me.
 
  • #4
PPonte said:
Metals:
Silver = 10.5
Lead = 11.3
Sodium = 0.97

Non metals:
Helium = 0.00017
Hydrogen = 0.00008
Chlorine = 0.00291

I don't see any anomality. Maybe they want you to answer sodium, but I don't see it as an anomality. It has a lower density than lead and silver because it has less protons and neutrons, which is the same to say mass, per unit of volume. I'm a beginner, I just tried to help. Wait for the experts.

Yes but because it has fewer electrons, protons and neutrons it must also have a smaller volume, which means that logically it's density shouldn't be that far off from the other metals but since it is, it is an anomaly.
 
  • #5
Ahh thanks guys you are real champs..
 

Related to Chemistry Homework Help: Identifying Metals and Anomalous Density in Elements

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