Aluminum, carbon, and calcium are examples of what type of matter?
2 answers:
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Answer:
In thioformaldehyde molecule,
Central atom - C
lone pairs on central atom - zero
Ideal bond angle between the carbon -hydrogen bonds -
Compared to the ideal angle, you would expect the actual angle between the carbon-hydrogen bonds to be .
Explanation:
The structure of thioformaldehyde is as follows. (in attachment).
From the structure,
Central atom - C
There is no lone pairs are present on the carbon atom, Hence,lone pairs on central atom - zero
The geometry of thioformaldehyde is Trigonal planar.
Hence, the ideal bond angle is .
Ideal bond angle between the carbon -hydrogen bonds -
All bonds in the thioformaldehyde is similar. Therefore,actual angle between the carbon-hydrogen to be .
Type of NR: alpha 235 U —> + 231 Th 92 ___ 90
Answer: ²³⁵92U → ⁴2He(2p,2n) + ²³¹90Th.
Answer: ²³⁵92U → Helium nucleus + ²³¹90Th.
Explanation : This is typical Alpha decay, as an alpha is a Helium Nucleus. The Alpha decay of Uranium-235 changes both the mass number and the atomic number of the element from 235 to 231 and from 92 to 90. The mass number decreases by 4, and the atomic number decreases by 2. This gives rise to the formation of a new element - Thorium-231.
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