12 Questions
What is the main purpose of the periodic table of elements?
To predict physical and chemical properties of elements
How many naturally occurring elements have scientists identified?
90
Which element is the most abundant based on the given percentages?
Oxygen
Why is understanding the periodic table important according to the text?
To predict how elements will chemically react
What does the atomic number of an element represent?
The number of protons in the nucleus
How is atomic mass calculated?
By adding the number of protons with the number of neutrons
Which subatomic particle is responsible for the majority of an atom's mass?
Neutron
What is the main distinguishing feature of elements within a period on the periodic table?
They have similar properties
Which group of elements on the periodic table has 1 valence electron and is known to be very reactive?
Halogens
Which series of elements consists of shiny reactive metals that are most commonly found in nature?
Lanthanide Series
Which group of elements in the periodic table is characterized by having 8 valence electrons, except for one element with only 2 valence electrons?
Noble Gases
Which category of elements includes non-reactive (inert) gases that have a completely filled outer electron shell?
Transition Metals
Test your knowledge on the elements of the periodic table by identifying key information such as atomic number, symbol, atomic mass, valence electrons, and state of matter at room temperature. Learn about the organization of elements based on atomic number and the unique characteristics of each element.
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