<span>Temperature is defined as the rate at which molecules move or vibrate
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the most free particles are gases, then liquids, solids
First of all, you should know the valence electron of atom.
Then add charge, In case of -ve ion & subtract, in case of +ve ion.
Answer:
Explanation:
The half life of a radioactive atom is the time taken for half of the radioactive nuclei to disintegrate. The shorter the half life, the faster a radioactive nuclei decays.
Half life is often expressed as:
Half life = 
Where λ is the decay constant.
Answer:
-10 m/s2
Explanation:
The acceleration is taken as −10 m/s2