Stomic Structure Flashcards
1
Q
- The atomic number of magnesium is 12. Therefore is nucleus must contain
A
12 protons and electrons Nb pg.6
2
Q
- An element with five protons six neutrons and eight electrons has an atomic number of
A
5 NB pg.7
3
Q
- An element with five protons six neutrons and eight electrons have a mass number of
A
11 NB pg. 7
4
Q
- The total number of electrons in the outer shell of a sodium Atom is
A
1 NB pg.8
5
Q
- The maximum number of electrons that can occupy the second shell of an Atom of magnesium
A
8 NB pg. 8
6
Q
- An unstable nucleus results from too many or too few _______
A
Neutrons NB pg. 9
7
Q
- Which words below is represented by the word “period” On the periodic table
A
Energy level NB pg. 10
8
Q
- The nucleus of isotope a of an element has a larger mass then isotope B of the same element. The number of neutrons in the same nucleus of isotope a is ___________ The number of neutrons in the nucleus of isotope b
A
Greater than NB pg. 10
9
Q
- What is the correct symbol for an isotope of carbon with six protons and six neutrons
A
12C NB pg. 9
10
Q
- Which statement about the arrangement of the periodic table is not true
A
Rare earth elements are in the first column on the left NB pg. 10
11
Q
- Boron carbon nitrogen and oxygen are all members of the same ______
A
Period NB pg 3
12
Q
- Which of the following elements would be the best conductor of electricity
A
Silver NB pg 4
13
Q
- Which of the following elements would be the most reactive
A
Iodine NB pg. 4
14
Q
- Which of the following elements would be the least reactive?
A
Silicon NB pg. 4
15
Q
- With the exception of helium, Group 18 Elemis usually have ____ valence electrons, so they do not usually react w/ other elements.
A
8 NB pg. 3
16
Q
- Electron cloud model; surrounding the nucleus Is an electron cloud made of shells - electrons do not, however, travel in a fixed orbit.
A
Shrodinger and Heisenberg NB pg, 2
17
Q
- Electrons travel and fixed orbits around the nucleus of the Atom
A
Niels Bohr NB pg. 2
18
Q
- Why named the Atom based on the Greek word meaning invisible
A
Democritus NB pg, 3
19
Q
- List three elements from the group contains the most reactive nonmetals
A
f,Cl, Br NB pg, 4
20
Q
- In each. How does the number of electrons in each kind of atom from left to right between groups 1 and 2? Explain how you know
A
Atoms; Electrons increase by one bc Atoms increases by one NB pg, 4
21
Q
- Which group contains elements with two valence electrons
A
Alkaline Earth Metals NB
Pg, 12
22
Q
- Describe one similarity and one difference between the two atoms you drew above. Include why each difference and similarity is expected, based on each elements location on the periodic table.
A
Same - number of valence electrons = group
Diff - # of energy levels bc of diff periods. NB pg, 5
23
Q
- An isotope of carbon has seven neutrons
A. Write this isotopes notation in nuclear form
B. Write the isotopes notation in hyphen form
C. Is this the most common form of the isotope? Explain how you know if it is or isn’t
A
A. 13C
B. Carbon-13
C. No because arg atomic mass is 12.011 on PT NB pg. 12
24
Q
- Use the following clues and the periodic table to determine The identity of each element described below
A. This element is in the same family as Br that has fewer protons than Mg it must be_______
B. This element has six energy levels in a valence electrons it must be___
C. This element is in the alkaline earth metals group has three energy levels it must be____
D. This element is in the family with the most reactive nonmetals and asked for energy levels it must be_____
A
A. F B. Rn C. Mg D. Br NB pg. 10
