Image #1 is clearly sharing their electrons to complete an octet, which makes me believe it is a Double Bond.
Image #2 is a duplicate (if my computer is displaying this picture correctly) which if this is the case and my computer isn't the issue I'd say it is a Double Bond. I don't think "above" and "below" make a difference but it may depend on the attachments and where they were originally placed. Either way Image #1 and #2 are Double Bonds.
Image #3 if I recall accurately is where 4 valence electrons must be gained. I'm a bit fuzzy with valence electrons and recommended viewing Crash Course on this if you'd like to perfect your understanding on Valence Electrons, but I recall a similar question and I remember 4 valence electrons for this type of image. Wish I could help more on this. :(
Exosphere, thermosphere, mesosphere, stratosphere, and troposphere
Pros- We wouldn't need to use fossil fuels as much (which we have a limited supply of) and we have an unlimited supply when using Biomass as enegy.
It actually produces more oxygen when growing biomass crops and uses up carbon dioxide.
While for cons...
There's more work when it comes to growing and handling these crops, and this lifestyle in general.
more money and resources that we do not always have.
We don't always have a certain animal waste - which can slow down the process a little more if there's not enough of a certain thing. But of course referencing the pro side of things - we will always be able to produce biomass energy through things such as dead plants, etc.
I hope this helps, and you pass! Good luck, rockstar! (:
Answer:
+1, lose, 1, 4s, 4s and 3d
Explanation:
<em>An element with the valence electron configuration 4s¹ would form a monatomic ion with a charge of </em><em>+1</em><em>. In order to form this ion, the element will </em><em>lose</em><em> </em><em>1 </em><em>electron from the </em><em>4s </em><em>subshell.</em>
The corresponding oxidation reaction is:
K ⇒ K¹⁺ + 1 e⁻
[Ar] 4s¹ ⇒ [Ar]
<em>If an element with the valence configuration 4s² 3d⁶ loses 3 electrons, these electrons would be removed from the </em><em>4s and 3d</em><em> subshell(s).</em>
The corresponding oxidation reaction is:
Fe ⇒ Fe³⁺ + 3 e⁻
[Ar] 4s² 3d⁶ ⇒ [Ar] 4s⁰ 3d⁵
