Answer: Option is the correct answer which is 4) Empirical, structural, molecular
Elements which are arranged in increasing order of atomic radii are F,Cl,Br, I.
Atomic radius is defined as the distance between nucleus of an atom and the valence electrons.In a group, atomic radii increases up to down as electrons are added in the next successive shell which increases the size of atom.
In a period, as electrons are added to the same shell the force of attraction between nucleus and valence electrons increases as a result of which atom tend to shrink resulting in decrease in atomic size.
As fluorine, chlorine, bromine and iodine are present in the same group their atomic size increases as new shells are added from top to bottom of periodic table., while for the elements given in other options they are present in same period or in different group and hence do not show an gradual increase in atomic radii.
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Answer: F,Cl,Br,l
Explanation:these elements are all part of group 17
b. They have at least one carbon to carbon double bond.
c. They have one or more carbon to carbon triple bonds.
d. They contain only single bonds.
B. Photovoltaic
C. Hydrophobic
D. Hydroelectric
Answer: Option (D) is the correct answer.
Explanation:
When kinetic energy of falling water is converted to electricity then the generated power is called hydroelectric power.
In a hydroelectric plant, a reservoir is used to store water in a dam. This dam is located on a river. When water is released from this reservoir then it flows through the turbine. As a result, this turbine spins and activates a generator which produces electricity.
Thus, we can conclude that hydroelectric power is generated by converting the kinetic energy of falling water to electricity.
Answer:
The percent yield of oxygen in this chemical reaction is 73.71 %.
Explanation:
Experimental yield of oxygen gas = 115.0 g
Theoretical yield:
Mass of potassium chlorate = 400.0 g
Moles of potassium chlorate =
According to reaction, 2 moles of potassium chlorate gives 3 moles of oxygen gas.
Then 3.2653 mol of potassium chlorate will give:
Mass of oxygen gas :
Percentage yield:
The percent yield of oxygen in this chemical reaction is 73.71 %.