Answer: <span>B. Each element has a unique arrangement of electrons.
Explanation:
1) Since the number of electrons in neutral atoms is equal to the number of protons, and the number of protons are unique for each element, each element has a unique arrangement of electrons.
2) The spectrum of an element is the radiation emitted for the atoms of the element when the valence electrons are emitted and that depended on the electrons configuration.
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<span>The balanced nuclear equation for the beta minus decay of Co-60:
</span>The decay is initially to an excited state of Nickel-60 . After which it emits one or two gamma ray to reach the stab;e state i.ie ground state of the Nickel 60 isotope<span>.
See image below </span>
Answer:
copper
Explanation:
These are usually copper wires with no insulation. They make the path through which the electricity flows. One piece of the wire connects the current from the power source (cell) to the load