Answer:
for example, a carbon atom weighs less than 2 × 10−23 g, and an electron .... Determine the numbers of protons, neutrons, and electrons in one of these iodine anions. ... We use the same symbol to indicate one atom of mercury (microscopic ... All known elements and their symbols are in the periodic table
Explanation:
Answer:
c) two different elements
Explanation:
A periodic table can be defined as the standard arrangement of chemical elements by atomic number, electronic configuration and chemical properties in a tabular form.
Generally, a proper representation of the mass number and atomic number of chemical elements is key and very important in chemistry.
Furthermore, as a rule, it should be noted that the mass number (nucleon number) is always larger than the atomic number(number of proton).
In the periodic table, all chemical elements are identified based on number of protons because it represents the atomic number.
This ultimately implies that, numbers of protons (atomic numbers) is used to differentiate an atom of one chemical element from the atom of another chemical element.
Hence, two atoms with different numbers of protons are two different elements.
For example, Hydrogen has one proton while Oxygen has 8 protons.
Answer:
B). The equivalence point is where the amount of acid equals the amount of base during any add-base titration.
Explanation:
Equivalence point -
During the process of titration of the neutralization reaction , like acid - base reaction .
In the titration process , the equivalence point is the point , when the amount of acid is equal to the amount of base .
In indicator used for th process is pH sensitive ,
It is not always necessary to have pH = 7 at the equivalence point ,
The titration curve is plotted for the pH v/s base .
Hence , from the given options , the correct statement is ( B ) .
Answer:
false
Explanation:
standard form is Potassium hydrogen phthalate
Answer:
C. Boiling Point
Explanation:
A to B represents heat being added to the substance in a solid state, making B to C the melting point. C to D represents heat being added to the substance in a liquid state, making D to E the boiling point as the liquid is converted to a gas.
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