Test- Atomic Structure Flashcards
1
Q
- The total number of electrons in the outer shell of a sodium are, is what?
A
1
Pg. 7
2
Q
- What is the greatest number of valence electrons an atom can have?
A
8
Pg. 7
3
Q
- The nucleus of an atom has a lot of stuff except that it?
A
Contains nearly all of the atoms volume
Pg. 7
4
Q
- What is the correct symbol for an isotope of carbon with 6 Protons and 6 neutrons?
A
12C
Pg. 7
5
Q
- An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of?
A
5
Pg. 7
6
Q
- Which is least reactive: silicon, argon, silver, or iodine?
A
Argon
Pg. 7
7
Q
- What is the correct electron arrangement for sulfur?
A
2-8-6
Pg. 7
8
Q
- An atom is electrically neutral because
A
The number of protons and electrons are equal
Pg. 7
9
Q
- Substances that can’t be broken down chemical into other substances are?
A
Elements
Pg. 7
10
Q
23. Which of the following elements would be most reactive? Silicon Silver Argon Iodine
A
Iodine
Pg. 7
11
Q
24. Which of the following elements would be the best conductor of electricity? Iodine Silicon Argon Silver
A
Silver
Pg. 7
12
Q
- The farther an electron is from the nucleus, the more ________ it has.
A
Energy
Pg. 7
13
Q
- The atomic number of magnesium is 12, therefore its nucleus must contain?
A
12 protons and no electrons
Pg. 7
14
Q
- When looking at the halogens on the periodic table, how does the number of valence electrons Change as the energy level is increased?
A
The total number of valence electrons does not change, it remains at 7
Pg. 7
15
Q
- With the exception of helium, group 18 elements usually have________ valence electrons, do they do not usually react with other elements?
A
8
Pg. 7
16
Q
- Who said electrons travel in fixed orbits around the nucleus of the atom
A
Niels Bohr
Pg. 7
17
Q
- Who did the solid sphere model; elements are atoms with different masses
A
Dalton
Pg. 7
18
Q
- Who did the electron cloud model?
A
Shrodinger and Heisenberg
Pg. 7
19
Q
- Who did the nuclear model and gold foil experiment?
A
Ernest Rutherford
Pg. 7
20
Q
- Which group contains elements with 2 valence electrons?
A
F, Rn, Ing, Br
Pg. 7
21
Q
- Mass # and number of neutrons of Potassium?
A
Mass number- 42
Neurons- 23
Pg. 7
