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ID: 819845 • Letter: 1
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Plz help!
Determine the number of protons and electrons in each of the following ions: Cl- S2- Ca2+ Classify these elements as metal or nonmetal. Br Zn Mg S Pt the periodic table, how are the elements grouped? randomly according to chemical and physical properties alphabetically in order of discovery Ernest Rutherford was a prominent scientist who contributed significantly to the theory of atomic structure. Which odf the following statements are true? Select all that apply. Rutherford theorized that atoms contain a positively charged region called the nucleus. Rutherford devised the solar system model to describe the layout of the atom. Rutherford devised the plum pudding model to describe the layout of an atom. Rutherford disproved the plum pudding model of the atom.Explanation / Answer
1) cl^-1
no.of protons=17
bo.of electrons=18
s^-2
no.of protons=16
no.of electrons=18
ca^=2
no.of protons=20
bo.of electrons=18
2)cl^-1 &s^-2 are non metals where as ca^+2 is a metal
3)according to physical and chemical properties
4)rutherford disproved the plum pudding model of the atom
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