What is the most common element (by mass) forming the planet Earth?

carbon
oxygen
iron
silicon
Iron is most abundant in the Earth's outer and inner core, and it is the fourth most common element in the Earth's crust.

Answers distribution

carbon
oxygen
iron
silicon
answers
flagCroatia
0%
12%
81%
6%
16
flagthe United Arab Emirates
19%
9%
71%
0%
21
flagPakistan
17%
12%
58%
7%
39
flagNigeria
7%
35%
57%
0%
14
flagMalaysia
22%
22%
55%
0%
18
flagIndia
17%
18%
47%
15%
287
flagCanada
28%
10%
47%
13%
46
flagItaly
21%
10%
47%
21%
19
flagthe Netherlands
34%
12%
40%
12%
32
flagGermany
21%
19%
39%
21%
100
flagthe United States
30%
16%
37%
14%
528
flagthe United Kingdom
30%
16%
33%
18%
246
flagNorway
29%
25%
33%
12%
24
flagAustralia
38%
12%
31%
17%
47
flagthe Philippines
19%
27%
30%
16%
36
flagPoland
29%
20%
28%
21%
6953
flagRepublic of Ireland
38%
30%
23%
7%
26
flagIndonesia
11%
58%
23%
5%
17
flagFrance
52%
15%
21%
10%
19
flagUnknown
30%
29%
15%
23%
481

Gender

men25%
women25%
carbon
30%
31%
oxygen
21%
19%
iron
25%
25%
silicon
22%
23%

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answers
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What is the most common element (by mass) forming the planet Earth?
1443
40%

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