Radon is the heaviest naturally radioactive ________________ gas. A) noble B) halogen C) group 1 D) diatomic
2 answers:
Answer: A) noble
Explanation:
Noble gases are group 18 elements which have completely filled valence shell. thus they do not lose or gain electrons and are called as nonreactive or noble.
Electron configuration of radon is:
Halogens are group 17 elements and have a valency of 1 as they can gain one electron to attain stable configuration.
Group 1 elements are alkali metals which have a valency of 1 as they can lose their outermost electron to attain stable configuration.
Diatomic means the molecule contains two atoms in one molecule.
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Answer:
vector with direction equal to the axis X.
Explanation:
We use the Gauss Law and the superposition law in order to solve this problem.
<u>Superposition Law:</u> the Total Electric field is the sum of the electric field of the first infinite sheet and the Electric field of the second infinite sheet:
<u>Thanks Gauss Law</u> we know that the electric field of a infinite sheet with density of charge σ is:
Then:
This electric field has a direction in the axis perpendicular to the sheets, that means it has the same direction as the axis X.