Answer:
<u>Physical Properties</u>
Alkali metals are good conductors of heat and electricity while halogens are poor conductors of heat and electricity.
Only specific to Alkali metals: They are soft and can be cut by knife.
<u>Chemical</u><u> </u><u>Properties</u>
Alkali metals have 1 valence electron while halogens have 7 valence electrons.
Alkali metals react with non-metals to form ionic compounds while halogens react with non-metals to form covalent compounds.
You can also look at the trends ( melting/boiling point, reactivity) down their group.
Answer:
a way in which something is usually done, especially within a particular area or activity.
Explanation:
It starts to collapse<span> under its own gravity. </span>Stars<span> which are massive enough start to crush the protons and electrons to form neutrons. These form a huge </span>star<span>-sized atomic nucleus, basically just neutrons, a neutron </span>star<span> is. A normal </span>star<span> can </span>collapse<span> into a neutron </span>star<span>.
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i hope this helps a little
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zane