the characteristics of the periodic table we can find the answer to identify and classify the chemical elements
The periodic table is a way of ordering the chemical elements by their atomic number, it is made up of rows called periods and columns called groups.
The rows start in an element with one electron in its last shell and end in an element with 8 electrons in the last shell.
The column all elements have the same number of electrons in the same shell.
Let's answer each part separately
First part
Find the melting point and the state of matter
Element melting point (ºC) state of matter
Potassium (K) 63.7 gaseous
Iodine (I) 111.7 solid
Gold (Au) 1063 solid
Germanium (Ge) 937.4 solid
Barium (Ba) 714 solid
Argon -180.4 gas
Chlorine -101 gas
Rubidium (Rb) 38.9 solid
Silver (Ag) 960.8 solid
Calcium (Ca) 838 solid
Silicon (Si) 1410 solid
Xenos (Xe) -111.9 gas
2nd part
Write the missing elements, we use the periodic table and we place the elements by their row and column, that is, period and group.
The name and symbol of the missing elements are written in the following table
1 2 11 14 17 18
1 Hydrogen Helium
H He
2 Lithium Beryllium Carbon Fluorine Neon
Li Be C F Ne
3 sodium Magnesium Silicon Cl Ar
Na Mg Si
4 K Ca copper Ge Bromine Kripton
K Ca Ge Br Kr
5 Rubidium Strontium Ag Tin Iodine Xenon
Rb Sr Ag Sn I Xe
6 Cesium Ba Au Lead Astate Radon
Cs Ba Au Pb At Rn
3rd part
It is requested to identify the elements by their properties.
For identification we will use the properties in the following order
Element 1
[tex]T_m[/tex] = -157 K
matter state: gas
corresponds to the element: Krypton
Element 2
T_m = 777ºC
State of matter: solid
conductivity: good
Corresponds to the element: Strontium
Element 3
T_m = 327º
Solid state
Corresponds to elements: Lead
Element 4
T_m = -7ºC
Liquid state
Corresponds to Bromine
Element 5
T_m = 1085ºC
conductivity: excellent
Corresponds to the element Copper
Element 6
T_m = 29ºC
Solubility: reacts violently
Corresponds to the element Cesium
In conclusion, using the characteristics of the periodic table, we can find the answer to identify and calcify the chemical elements.
Learn more about the periodic table here:
https://brainly.com/question/11155928