can anyone check these answers tell me if there right or help if there wrong?

Question

6. Which of the following are definitely in atoms of the same element?
*A. 3 protons, 3 neutrons and 3 protons, 4 neutrons
B. 3 protons, 3 neutrons and 4 protons, 4 neutrons
C. 4 protons, 4 neutrons and 3 protons, 4 neutrons
D. 3 protons, 4 neutrons and 4 protons, 3 neutrons

7. An atom of iron contains 26 electrons. How many energy levels are needed to contain these electrons?
A. 1
B. 2
C. 3
*D. 4

8. The atomic number of chlorine is 17. How many valence electrons does an atom of chlorine have?
A. 2
*B. 7
C. 8
D. 17

9. Which of the following is an example of periodicity?
*A. eating breakfast
B. hitting a home run
C. writing a letter
D. sneezing

10. A certain element is a gas and does not conduct electricity or heat. Which of the following is a possible number of valence electrons for the atoms of this element?
A. 1
B. 2
C. 3
*D. 6

11. Based on its position in the periodic table, the most likely charge of an iodine ion is?
*A. 1+
B. 1-
C. 2+
D. 7-

Answer 1

All OK except 11 - which is B.

Answer 2

All correct except #11. Should be B, -1.