7. Indicate if the following are correct or incorrect.
1 answer:
Answer:
1s2: correct.
6s3: incorrect because the subshell s can hold up to 2 electrons.
5f10: correct.
4d3: correct.
2d4: incorrect because the second energy level just has the s and p subshells.
3p10: incorrect because the p subshell can hold up to 6 electrons.
Explanation:
Hello there!
In this case, according to the attached file, which shows the correct orbitals and electrons, we can proceed as follows:
1s2: correct.
6s3: incorrect because the subshell s can hold up to 2 electrons.
5f10: correct.
4d3: correct.
2d4: incorrect because the second energy level just has the s and p subshells.
3p10: incorrect because the p subshell can hold up to 6 electrons.
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Answer:
a) Increase
b) Mass of oxygen = 0.9 g
Explanation:
The chemical reaction depicting the formation of rust is:
where rust is Fe2O3 i.e. iron(II) oxide or ferric oxide
a) When a piece of Fe is exposed to air or oxygen the surface gets coated with Fe2O3. This will increase the amount of matter and hence the mass.
b) Initial mass of iron , Fe= 23.2 g
Mass of iron coated with oxide, Fe2O3 = 24.1 g
Therefore mass of oxygen combined=