Test - Atomic Structure

Question 1

5. What is the greatest number of valence electrons an atom can have ?

Answer 1

8
Pg. 7
(11)

Question 2

6. The atomic number of magnesium is 12 therefore it’s nucleus must contain…

Answer 2

12 protons and no electrons
Pg. 7
(13)

Question 3

7. A neutral atom must contain 8 protons and

Answer 3

9 neutrons and 8 electrons
Pg. 7
(10)

Question 4

17. What is the correct electron arrangement for sulfur

Answer 4

2 - 8 - 6
Pg. 7
(10)

Question 5

22. A atom is electrically neutral because

Answer 5

The number of protons and electrons are equal
Pg. 7
(13)

Question 6

31. Out of the following elements which is most reactive

Iodine. Silicon. Silver. Argon

Answer 6

Iodine
Pg. 7
(15)

Question 7

32. Which of the following is least reactive

Iodine. Silicon. Silver. Argon

Answer 7

Silicon
Pg. 7
(21)

Question 8

38. Who invented the solid sphere model and discovered that element are atoms with different masses

Answer 8

John Dalton
Pg. 7
(3)

Question 9

39. Who invented the electron cloud model

Answer 9

Shrodinger and Heisenberg
Pg. 7
(3)

Question 10

43. Who theorized that electrons travel in fixed orbits around the nucleus

Answer 10

Niels Bohr
Pg. 7
(3)

Question 11

45. List 3 elements from the group containing the most reactive non metals

Answer 11

Fluorine, astatine, and iodine
Pg. 7
(14)

Question 12

46. In each period how does the number of electrons change from left to right

Answer 12

The farther right you go the more valence electrons an atom has as 1 electron is added each group
Pg. 7
(14)

Question 13

48. How many neutrons does the element calcium - 42 have. How many protons

Answer 13

20 p+
22n°
Pg. 7
(15)

Question 14

54. Which out of these elements is a non metal

Ar. H. Al. Na. Te. F

Answer 14

Ar. H. F.
Pg.7
Periodic table (21)