B) the bacteria that live in the intestine of a rabbit
Answer:
1-b
2-weaker(option is incorrect)
3-a
Explanation:
1-b because iodine is more electronegative because of this negative on iodine will be more stable as negative charge on more electronegative element is more stable.
2-weaker as size of Te (Tellurium) is greater than S (sulphur) so bond length of H-Te is larger than H-S and therefore bond energy will be lesser and can easily give hydrogen in case of H-Te. as bond energy is inversly proportional to bond length.
3-a hydrogen has more negative electron affinity so hydrogen will have -1 charge and it will behave as a electron donar atom that is basic not acidic hence NaH is not acidic.
B.
Replace sentence 4 with: In addition, some readers were concerned that the technical details about robots would not be of interest to most students.
Explanation:
i just did the test
It's sodium chloride.
sodium chloride is table salt which is a pure substance. it's a compound but not a mixture.
note that iodized salt is a mixture, but we're just talking sodium chloride here.
