Which naturally occurring chemical element is the densest?

helium
lead
osmium
platinum
The density of osmium is 22,570 kg/m3, slightly more than Iridium (22,420) and platinum (21,450). Commonly used metals are considerably less dense - the density of iron is 7,870, lead 11,340 and mercury 13,456.
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Answers by country

helium
lead
osmium
platinum
answers
flagGhana
6%
20%
60%
13%
15
flagAustralia
6%
23%
57%
12%
64
flagIndia
7%
16%
54%
21%
592
flagAustria
5%
8%
54%
31%
35
flagBangladesh
0%
18%
54%
27%
11
flagMalaysia
14%
10%
53%
21%
28
flagSingapore
4%
17%
52%
26%
23
flagthe Netherlands
0%
21%
50%
21%
14
flagGreece
10%
26%
47%
15%
19
flagPoland
4%
30%
43%
20%
10303
flagSwitzerland
4%
28%
42%
23%
21
flagthe United States
5%
28%
41%
24%
491
flagCanada
6%
22%
38%
29%
31
flagthe United Kingdom
6%
34%
36%
21%
203
flagGermany
2%
33%
33%
30%
142
flagNigeria
27%
29%
32%
8%
37
flagPakistan
9%
23%
31%
33%
72
flagthe Philippines
10%
30%
30%
24%
66
flagthe United Arab Emirates
0%
23%
30%
46%
13
flagIndonesia
10%
20%
20%
50%
10