You need to measure the length of a table. You can use a meter stick or a 30 cm rules. Both have the smallest division at 0.5 cm. Will one of the instruments give a greater uncertainty? Explain

The correct answer is b

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Answer/// he concludes that the atom particles can be broken due to the paddle wheel being moved by particles coming out of the metal;

Electron equations of the given changes are as follow,a)                              cu      →      cu⁺²  + 2e⁻b)                              mg⁺²  +  2 e⁻      →      mgc)                              cl⁻    →      cl  +  1e⁻d)                              s  +  2 e⁻    →      s²⁻e)                                o²⁻      →      o  +  2 e⁻f)                              p  +  3 e⁻    →      p³⁻g)                              fe²⁺    →      fe³⁺  + 1 e⁻h)                              s²⁻    →      s⁴⁺  +  6 e⁻