Answer:
P2>S2>Cl2 is the order of bond energy of the given molecules.
Explanation:
The bonding in each molecule is shown below:
Thus, between each P-atom, there exists a triple bond.
Between two S-atoms there exists a double bond.
Between two chlorine atoms, there exists a single bond.
As the number of bonds increases between the given atoms, then bond energy required to break the bonds also increases.
Thus, the bond order is shown below:
.
Answer:
Some of KCl will precipitate out of the solution.
Explanation:
Gases solubility increases with decrease in temperature and therefore nitrogen gas will not bubble out is the temperature is dropped from 75 deg C to room temperature.
On the other hand, KCL is a salt in solid state and the solubility of solids decreases with decrease in temperature. Therefore some of the KCl will precipitate out of the solution when temperature drops from 75 deg C to room temperature.
4. unstable and spontaneously emits alpha particles
Explanation:
Nuclei of uranium-28 atoms are typically unstable and spontaneously emits alpha particles.
Unstable nuclei are nuclei whose neutron/proton ratio is different from its stability ratio.
- Most nuclei heavier than Bi-209 are naturally radioactive.
- Nuclei of U-238 is unstable and it spontaneously disintegrates.
²³⁸₉₂U → ²³⁴₉₀Th + ⁴₂He
- The uranium decays to produce thorium nuclei with the emission of alpha particles, He.
Learn more:
Nuclear decay brainly.com/question/10094982
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Answer:
3 g/mL
Explanation:
Density is mass divided by volume (g/mL).
Mass of rock = 12.5
Volume of rock = 24-20 = 4mL
Density of rock = 12.5g/ 4mL = 3.125 g/mL
Round to the lowest number of significant figures which is 1 to get 3 g/mL
Answer:
About one valence electron
Explanation:
Obviously, removing that electron gives us [Ar] (same configuration as K1+), which is a noble gas and has 8 electrons. Valence electrons are generally regarded as being 'the outermost electrons' for a given atom. Therefore, with neutral potassium, there is one valence electron