Exploring Trends in the Periodic Table

How are elements arranged in the periodic table?

• By increasing atomic mass

• By increasing atomic number

• By their discovery date

• By alphabetical order

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What do the groups in the periodic table represent?

• Elements discovered in the same year

• Elements with the same number of protons

• Elements with similar atomic masses

• Elements with similar reactivity

What does the period number in the periodic table indicate?

• The reactivity of an element

• The atomic mass of an element

• The number of electron shells in an atom

• The number of protons in an atom

How many electron shells does sulfur have?

• 4

• 2

• 3

• 5

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What is the atomic radius?

• The distance from the nucleus to the outermost electron

• The distance between two nuclei in a molecule

• The number of protons in an atom

• The number of electron shells in an atom

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How does atomic radius change across a period?

• It fluctuates randomly

• It increases

• It decreases

• It remains constant

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What is the ionic radius?

• The number of electrons in an ion

• The radius of an ion

• The distance between two ions

• The radius of an atom

How does the ionic radius of cations compare to their parent atoms?

• Cations are larger

• Cations have more protons

• Cations are smaller

• Cations are the same size

Why are anions larger than their parent atoms?

• They have fewer electrons

• They have more electron shells

• They have more protons

• They have increased electron repulsions

Why is understanding atomic and ionic radii important?

• It explains electron distribution and element behavior

• It determines the atomic mass

• It helps in drawing atoms

• It identifies the element's color

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