Answer:
2) option C
3) True
Step-by-step explanation:
1) Compare and contrast oxygen and polonium. Four sentences.
Oxygen and polonium both are present in group 6.
Both have six valance electrons
Polonium is radioactive metal while oxygen is gas so they are differ in state.
Oxygen compounds are present in nature while polonium compounds are not found however synthetic compound could be made.
2) Second orbitals in Bohr diagrams hold how many electrons?
Bohr diagram shows that the shell closer to the nucleus is K shell and it can hold only 2 electrons. The shell next to the K is called L it is second shell and it can accommodate 8 electrons.
1st shell (K) = 1s²
Second shell (L) = 2s² 2p⁶ ( 6+2= 8)
3) The first orbital in Bohr Rutherford diagram can hold two electrons.
Answer = True
Bohr diagram shows that the shell closer to the nucleus is K shell and it can hold only 2 electrons.
1st shell (K) = 1s²