Periodic Table Elements
What is the atomic number of an element?
For example: The atomic number of oxygen is 8.
The atomic number of an element is the number of protons of an element is the atomic number.
How do we get the amount of protons in an element?
Tell us the amount of protons that the Potassium(K) have.
The protons are the same number of the atomic number.
The amount of protons in Potassium(K) is 19.
Metals can be divided in two groups, which are these two groups?
Tell us one main characteristic of Metals.
These two groups are called Alkali Metals and Alkaline Earth Metals.
Some main characteristics of the metals are that they lead electricity and heat, they are malleable, this means that if you put a metal under pressure energy and heat it will bend before it breaks.
Mention the two elements that are part of the molecule of table salt.
The two elements of these molecule are Na(Sodium)Cl(Chlorine).
What are the symbols of Oxygen and Nitrogen?
The symbols are, O(Oxygen) and N(Nitrogen).
"This is the amount of matter that an element has."
To which term is this definition?
This definition is for atomic mass.
To which associated information this formula belongs to?
It belongs to the amount of neutrons in an element.
Which is the group #1 of elements in the periodic table?
Mention at least 2 elements of this group.
The group #1 of elements are is called the Alkali metals.
Some elements are:
Lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Mention at least 5 elements that are part of the Rare Earth Metals group.
Lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium
To which element does this symbol belong to?
- Tc.
This symbol belongs to Technetium.
Mention the 2 symbols that appear in the molecule of water.
The symbols that appear in the molecule of water are:
H(Hydrogen).
O(Oxygen).
Which is the formula to know the amount of electrons in an element?
Tell us the amount of electrons in the Actinium(Ac).
Amount of Electrons = Amount of Protons = Atomic Number.
The amount of electrons in Actinium(Ac) is 89.
What group number are the halogens?
How many elements does this group have?
The halogens are group #17.
Halogens have 6 elements, fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts).
What are the names of these Symbols?
1. Tl.
2. Sb.
3. Br.
1. Thallium.
2. Antimony.
3. Bromine.
Which is the symbol of the element in row #4 and column #14.
The element in row #4 and column #14 is Ge(Germanium).
Tell us, what is the period in the periodic table?
After saying what a period is, tell us an element from period number 2.
The periods correspond to a horizontal order, that is, the rows of the periodic table. The elements of each one of the periods have different properties, but have the same amount of levels in their atomic structure. The periodic table has 7 periods in total.
Options for the elements: Lithium(Li), Beryllium(Be), Boron(B), Carbon (C), Nitrogen(N), Oxygen(O), Fluorine(F) and Neon(Ne).
What tells us the number of electronic layers or orbitals of an element?
How many electronic layers does Astatine(At) has?
The period tells us the number of electronic layers, meaning the horizontal rows.
Astatine(At) has 6 electronic layers.
To which group does oxygen belongs to?
Mention at least 3 elements that belong to this group.
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Read the next statement:
These are those elements that are easier to find on earth, that is why they are called “??” because they represent the most elements of our planet.
To which group of elements is this statement referring to?
Oxygen is part of the Chalcogens, which is group #16.
Other elements in this group: Sulfur, selenium, tellurium and polonium.
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That statement is referring to the Representative Elements.
What are the names of the elements that are in period #1?
The names of these elements are:
- Hydrogen.
- Helium.
Mention all the symbols that are part of the Metalloids.
B(Boron), Si(Silicon), Ge(Germanium), As(Arsenic), Sb(Antimony), Te(Tellurium) and At(Astatine).
What are the families on the periodic table?
How many families does the periodic table have?
An element family is a column of elements that is on the periodic table. Each member of a family has the same number of valence electrons. Family members share similar chemical and physical properties. It is also called a group.
There are 18 families in the periodic table.
What does the Valency of an element tells us?
Tell us the Valency of: Radon(Rn), Oxygen(O) and Nitrogen(N).
The valency tells us the amount of electrons in the last electronic layer.
Radon(Rn) = 8
Oxygen(O) = 6
Nitrogen(N) = 5
Mention all the elements that are part of the group of noble gases.
What is the valency of this elements?
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Mention at least 2 characteristics of the elements in the Transition family.
Helium(He), Neon(Ne), Argon(Ar), Kryton(Kr), Xenon(Xe) and Radon(Rn).
The valence of these elements is 8, because they are in column #8.
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It could be whatever of these characteristics:
- They are all metals.
- These metals have more valence electrons and are less reactive than metals in the first two metal groups.
- Usually they are very hard, and have very high melting and boiling points.
- They are all solid at room temperature except for Mercury.
Mention all the elements that are part of the Reactive Nonmetals.
Carbon,Nitrogen, Oxygen, Fluorine, Phosphorus, Sulfur, Chlorine, Selenium, Bromine and Iodine.
Which is the symbol of the element with 57 protons, 6 layers and part of the Rare Earth Elements.
The symbol of the element with all that characteristics is La(Lanthanum).