3. How are elements represented in the periodic table?a. By their atomic number.b. By their mass number.c. By their electron configuration.d. By their physical state at room temperature.
Question
3. How are elements represented in the periodic table?a. By their atomic number.b. By their mass number.c. By their electron configuration.d. By their physical state at room temperature.
Solution
Elements in the periodic table are primarily represented by their atomic number. This is because each element has a unique atomic number that corresponds to the number of protons in its nucleus.
While elements in the periodic table are also associated with their mass number and electron configuration, these are not the primary means of representation. The mass number (the total number of protons and neutrons in the nucleus) can vary among isotopes of the same element, and the electron configuration can change in ions of the element.
The physical state of an element at room temperature (solid, liquid, or gas) is also a characteristic associated with each element, but it is not the primary means of representation in the periodic table.
So, the correct answer to the question "How are elements represented in the periodic table?" is: a. By their atomic number.
Similar Questions
How is each element represented in the periodic table?A.Each element is represented by a one or two-letter symbol.B.Each element is listed as an abbreviation of the first letters of its name.C.Each element is in an order based on alphabetical order.D.Each element is listed in its own box based on when it was discovered.
Choose the best descriptions of what the Periodic Table is.Question 1Select one or more:Provides information about the elements such as, names, symbols and atomic numbersArrangement of elements according to increasing atomic numberClassification of molecules in terms of chemical and physical propertiesArrangement of elements according to increasing mass numberClassification of elements in terms of chemical and physical propertiesArrangement of elements according to abundance on EarthList of all the elements we know on EarthQuestion 2Not yet answeredMarked out of 3Flag questionQuestion textMatch the following descriptions with elements on the Periodic Table (abbreviated as PT):MetalsAnswer 1 Question 2Non-metalsAnswer 2 Question 2Semi-metalsAnswer 3 Question 2
How are the elements arranged in the modern periodic table?A.According to atomic numberB.According to atomic massC.According to the number of neutronsD.According to the number of electrons
Which statement about the periodic table is correct?A. The elements with atomic numbers 8, 16 and 34 have the same number of main energy levels.B. The elements with atomic numbers 8, 9 and 10 have similar chemical properties.C. The elements with atomic numbers 20, 21 and 22 are in the same group.D. The elements with atomic numbers 20, 38 and 56 have the same number of electrons in their outer energy level.
How is the periodic table organized? What information does it provide about elements?Your answer
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