_______________THE ANSWER IS D______________
Hydrogen is easily the most abundant element in the universe.
It is found in the Sun and most of the Stars, and the planet Jupiter is composed mostly of Hydrogen.
I hope this helps...
Answer:
Central-metal oxidation state: +2
Coordination number: 6
Overall charge: -2
Explanation:
In the ion complex:
Na₂[Cr(NH₃)₂(NCS)₄]
The central-metal is Cr, the ligands are NH₃ and NCS.
The NH₃ is a neutral ligand, while NCS is an anionic ligand with -1 in charge.
The overall charge of the complex is:
2Na⁺ + [Cr(NH₃)₂(NCS)₄]⁻² → <em>-2</em>
As NCS gives -1 in charge and there are four NCS, The Cr must be in <em>+2</em> of oxidation state to give an overall charge of -2.
As Cr is bonded to 2 NH₃ and 4 NCS, the coordination number is 2+4 = <em>6</em>
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I hope it helps!
C.) Volume
Intensive properties, for example; color and density, do not depend on present matter.
If we added heat to the system, it would push to produce more and more NH3(g) and energy. However, the problem says the temp of this system is decreased, which means they react to produce more and more N2(g) and H2(g). Therefore, the concentration of H2(g) and the concentration of N2(g) both increase, and statement (1) is correct.
Hope this would help :))
