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Atoms and Periodic table
Atoms and Periodic table
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Recap on atoms and periodic table
Flashcards
37 cards
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Practice quiz
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Questions
37
Answers
1
How many valence electrons does this element have?
5
8
1
3
2
If a Bohr model shows an atom with 3 shells and 5 valence electrons what atom is it
Phosphorous
Indium
Silicon
Nitrogen
3
How many electrons does sodium (Na) have?
11
12
23
4
Which period does hydrogen (H) belongs to?
1
3
0
2
5
Which of the following shows the correct electronic configuration of Magnesium (Mg)?
2. 8
2. 8. 2
2. 6
2. 8. 8
6
What are the groups in the periodic table?
a column of similar elements
A row of similar elements
7
Which group and period does chlorine (Cl) belongs to?
Group 17 Period 3
Group 3 Period 17
Group 5 Period 3
Group I Period 2
8
Who discovered energy levels?
Mendeleev
Bohr
Rutherford
Dalton
9
How many valence electrons does this element have?
2
1
3
5
10
Which period and group does Argon (Ar) belongs to?
Period 18 Group 3
Period 4 Group 13
Period 3 Group 18
Period 3 Group 1
11
Which group does calcium (Ca) belong to?
4
3
2
1
12
Which period does phosphorus (P) belong to?
2
1
3
4
13
Protons have a mass of
1 gram
2 AMU
1 AMU
Positive
14
How many valence electrons does this element have?
5
7
2
4
15
How many valence electrons does this element have?
8
2
3
5
16
Potassium (K) has
19 Protons and 20 Electrons
19 Protons and 19 Neutrons
20 Protons and 19 Electrons
19 Protons and 20 Neutrons
17
How many protons does Carbon have?
8
12
6
14
18
Which of the following does the Nucleus contain?
Protons
Protons and Neutrons
Protons and Electrons
Neutrons and Electrons
19
Element with 28 protons:
Nickel (Ni)
Silicon (Si)
Gold (Au)
Silver (Ag)
20
What is the correct chemical symbol for sodium?
S
Na
NA
So
21
How many neutrons does fluorine (F) have?
19
9
10
22
Mass of 1 AMU, no charge:
Does not exist
Proton
Electron
Neutron
23
Which of the following statements is correct?
Neutrons are - and Electrons are 0
Protons are + and Electrons are -
Protons are + and Neutrons are -
Protons are - and Electrons are +
24
What is the center of an atom called?
Protons and Neutrons
Nucleus
Electron Cloud
Nucleolus
25
What is the atomic number of an atom?
The number of neutrons it contains
The number of atoms it contains
The number of protons it contains
26
A noble gas has no empty spaces in its outer energy level. Examples include Argon, Helium, and
Oxygen
Hydrogen
Neon
Fluorine
27
What is a proton?
Negatively charged particle
Neutrally charged particle
Positively charged particle
28
How many electrons could fit in the second energy level of any atom with 10 or more electrons?
8
2
18
10
29
How many valence electrons does this element have?
1
2
8
5
30
Mass of 1 AMU, negative charge:
Proton
Electron
Neutron
Does Not Exist
31
Which of the following shows the correct electronic configuration of oxygen atom?
2, 6
2, 8
2, 4
8
32
How many electrons are in the second energy level of Carbon?
8
1
4
2
33
Why is atom neutrally charged?
It has same number of electrons, protons and neutrons.
It only has neutrons
It does not have any electrical charges
It has same number of electrons and protons
34
How many protons does Boron (B) have?
11
6
5
35
An Atom Consists of
a nucleus surrounded by electrons
An electron surrounded by a nucleus
a nucleus containing electrons
36
What does "period" in the periodic table represent?
The vertical row
The horizontal row
37
Which period does Potassium (K) belongs to?
3
1
2
4
