Answer:
Explanation:
Beta emission occurs when a neutron is converted to a proton, an electron and a neutrino. This phenomenon reduces the neutron-proton ratio(N/P).
When a beta emission occurs, the mass number of the daughter nucleus is the same as that of the parent nucleus while the atomic number of the daughter nucleus increases by one unit.
We can see this explanation above in the reaction described in the answer section.
Answer: Option (4) is the correct answer.
Explanation:
Heat of vaporization is defined as the heat energy which is necessarily added to a liquid substance in order to transform the quantity of the substance into a gas.
For example, in there will be presence of strong hydrogen bonding and in order to break this bond high amount of heat energy is required.
Whereas , and are all covalent compounds which are bonded together by Vander waal forces. As these forces are weak in nature hence, they require less amount of heat energy to convert into vapor state.
Hence, they have low value of . Also, Ar is a noble gas and it has only Vander waal forces. So, it will also have low value of .
Therefore, we can conclude that out of the given options have the highest .
B) occur naturally, have a fixed chemical composition
The answer is b. electric current.
Electric current is the flow of charges, and the electrons are negative charded particles that constitute matter.
The flow of electrons happens through conductor materials (wires). As the question says the movement of the electrons (flow) is induced by an electric field.