Answer:
Model D
Explanation:
Bohr's Model has a planetary look. Where the electrons are in an orbit.
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❖ The source of the sun's heat is B. nuclear fusion
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Explanation:
d. endothermic change as
heat is added to solid ice to change it to liquid water
Answer:
Explanation:
Catalyst is I2 . Because I2 is reacted with starting material in step 1 and generated in second step
Rate limiting step is step 1. Because in rate equation CH3CHO and I2 is mentioned. Hence the overall rate of reaction is depending CH3CHO and I2. Rate limiting step is step 1
Answer:
moving across te periodic table electronegativity increases.
Explanation:
as we move across a period the effective nuclear charge increases as the number of protons in nucleus increases. due to increase in effective nuclear charge electronegativity increases