Elements on the periodic table are arranged into vertical columns called groups. Which of the following is true of the elements in a group?
O All the elements in a group have the same mass.
Elements in a group have the same number of neutrons.
Elements in a group have similar properties.
O Elements in a group have the same number of protons.
Answers: 2
Chemistry, 23.06.2019 00:30
Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.
Answers: 1
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