<u>Answer:</u> The word for the definition of an electron in the highest occupied energy level of an atom is " valence electron".
<u>Explanation:</u>
A valence electron is an external shell electron associated with an atom in chemistry and physics that can participate in the creation of a chemical bond if the highest occupied energy level of an atom is not closed. All atoms in a single covalent bond add one valence electron to form a mutual pair.
The periodic table showcases the arrangement of valence electrons group and block wise like:
- Alkali metals have <em>n </em><em>s</em> 1 as external shell configuration like H, Li, Na, K etc.
- Alkaline metals have <em>n</em> s 2 as external hell configuration like Be, Mg, Ca etc.
- p-block comprises group 13 to 18 having general electronic configuration <em>n </em><em>s</em> 2, <em>n</em><em> p</em><em> </em>1–6.
- d-block or transition metals have general electronic configuration (<em>n</em>-1) d 1–10, <em>n </em>s 1–2.
- f-block or inner transition metals have general electronic configuration (<em>n</em>-2) f^1–14 (<em>n</em>-1) d^0-1 <em>n </em>s^2.
Answer:
2:Venus is often named as Earth's twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. ... Both planets have almost the same size and density and Venus is only a 30% closer to the Sun than Earth 1:116d 18h 0m 3: The atmosphere of Venus is made up almost completely of carbon dioxide. It also includes small doses of nitrogen and clouds of sulfuric acid. ... This composition causes a runaway greenhouse effect that heats the planet even hotter than the surface of Mercury, although Venus lies farther from the sun.
Explanation:
I would say it's rationing: if people are only allowed a certain number of something (let's say: bottles of cooking oil), then the people who are entitled to is (as all are) but don't need is as much are likely to try to make profit by trying to sell it on a black market.
Answer:
D. 2^(3/2)
Explanation:
Given that
T² = A³
Let the mean distance between the sun and planet Y be x
Therefore,
T(Y)² = x³
T(Y) = x^(3/2)
Let the mean distance between the sun and planet X be x/2
Therefore,
T(Y)² = (x/2)³
T(Y) = (x/2)^(3/2)
The factor of increase from planet X to planet Y is:
T(Y) / T(X) = x^(3/2) / (x/2)^(3/2)
T(Y) / T(X) = (2)^(3/2)
