At the top of the noble gases<span> is little helium (He), with a shell </span>that<span> is full with only two electrons. The fact </span>that<span> their outer shells are full means they are </span>quite<span> happy and don't need to react with other elements. In fact, they rarely combine with other elements. </span>That non-reactivity<span> is why they are called </span>inert<span>.</span>
cation
anion is negatively charged, so more electrons then protons,
cation is positively charged, so more protons thatn electrons
Answer:
a.
b.Attractive
Explanation:
We are given that
Mass of an electron,
Mass of proton,
Distance between electron and proton,R=
a.Substitute the values then we get
b.We know that like charges repel to each other and unlike charges attract to each other.
Proton and electron are unlike charges therefore, the force between proton and electron is attractive.
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Answer
The potential energy is less
Explanation:
From the question we are told that
The source of the emf is by wires to a resistor.
Now the potential energy of electron before leaving the source emf will be greater than the potential energy of an electron after leaving the source of emf because the resistor connected to the source emf will reduced the potential energy as it will convert some of the energy to heat