Register
Which is an element? A: H20 B: NaCl C: Mg D: CO
41.4k views
4 votes
Which is an element?
A: H20
B: NaCl
C: Mg
D: CO

User Russell Uhl
by
5.1k points

2 Answers

0 votes
D is the answer. The others are compounds not single elements
User Matt Dillard
by
4.8k points
5 votes
The answer is option D "CO." Co also known as Cobalt is the 27th element on the periotic table. It was discovered in 1735, it's boiling point is 3200 k.

Atomic mass: 58.9332
Protons: 27
Neutrons: 32
Electrons: 27

Hope this helps!
Which is an element? A: H20 B: NaCl C: Mg D: CO-example-1
User Zamfir
by
5.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.7m questions

7.5m answers

Other Questions

What forces can be classified as intramolecular
How many pounds in a 3.00 l bottle of drinking water?
Write the parts of the electromagnetic spectrum in order from lowest frequency to highest frequency
Explain why we must balance all chemical equations.
Which subatomic particle is the lightest? (a) neutron (b) proton (c) electron (d) all of the above (obviously not the last one, I guess)
Link Copied!