Test - Atomic Structure

Question 1

10. What is the correct symbol for an isotope of carbon with 6 protons and 6 neutrons pg 11

Answer 1

Little 12C

Question 2

11. A neutral atom may contain 8 protons and what? Pg 6

Answer 2

And 9 electrons and 8 electrons

Question 3

14. Which of the following elements would be the least reactive?
Silicon 
Silver. Pg 16
Argon
Iodine

Answer 3

Argon

Question 4

18. An atom is electrically neutral because

Pg 6

Answer 4

The numbers of protons and neutrons are equal

Question 5

19. Each family in the periodic table has its own characteristics properties based on the number of what? Pg 16

Answer 5

Protons

Question 6

23. Which of the following elements would be the most reactive
Silicon
Silver
Argon 
Iodine pg 16

Answer 6

Silver

Question 7

25. The maximum number of electrons that can occupy the 2nd shell of an atom of magnesium is? 16

Answer 7

8

Question 8

26. An unstable nucleus results from too many or too few what? Pg 6

Answer 8

Neutrons

Question 9

47. A. - this element is in the same family as Br but has fewer protons than Mg it must be what? Pg 16

Answer 9

F

Question 10

47 b - this element has 6 energy levels and 8 valence electrons it must be what? Pg 16

Answer 10

Rn

Question 11

47 c - this element is in the alkaline earth metals group and has 3 energy levels it must be? What? Pg 16

Answer 11

Hg

Question 12

47 d - this element is in the family with the most reactive nonmetals and has 4 energy levels it must be what? Pg 16

Answer 12

Br

Question 13

49. List 3 elements from the group containing the most reactive non metals pg 16

Answer 13

F, CI, Br, I, At.

Question 14

52 an isotope of carbon has 7 neutrons. A - write this isotopes notation is nuclear form. B- write this isotopes notation in hyphen form. C - is this the most common form of the isotope explain how you know.pg 11-12

Answer 14

A. - 13C
B - carbon - 13
C no because average atomic mass on the PT is 12.011 and is wipeighted avg 12c most common

Question 15

51. Classify the following elements as metals non metals or metaloids include one characteristic or property of each type
Ar.     Te
H.       F pg 16
AI
Na

Answer 15

Metals. Nonmetal. Metalloids
Ar. Ar. Te
Na. H
F
Good. Poor conductor. Semi conductor
conductor

Question 16

33. What is the mass # and number of neutrons of 42K pg 11-12

Answer 16

42 and 23 neutrons

Question 17

34 what is the symbol atomic # and mass # andc# of protons of an isotope with 3 protons and 2 electrons pg 11-12

Answer 17

Symbol - 5He
Mass # 5
Atomic # 2
Protons - 2

Question 18

35. What is the isotope symbol of an isotope with a mass # of 127
    Pg 11-12

Answer 18

127I