Periodic Law and Periodic Table
Chemistry ⇒ Atomic Structure and the Periodic Table
Periodic Law and Periodic Table starts at 8 and continues till grade 12.
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A student claims that the periodic table can be used to predict the chemical properties of unknown elements. Do you agree? Explain your answer.
Describe the trend in atomic radius as you move down a group in the periodic table.
Describe the trend in metallic character as you move from left to right across a period.
Explain why elements in the same group of the periodic table have similar chemical properties.
Explain why the atomic radius decreases across a period from left to right.
Explain why the noble gases are chemically inert.
State the Modern Periodic Law.
A student claims that the periodic table can be used to predict the chemical properties of unknown elements. Do you agree? Explain your answer.
Which of the following best describes the periodicity of properties?
(1) Random variation
(2) Repetition at regular intervals
(3) No pattern
(4) Decrease only
Which of the following elements has the highest electronegativity?
(1) Fluorine
(2) Oxygen
(3) Chlorine
(4) Nitrogen
Which of the following elements is a metalloid?
(1) Silicon
(2) Sodium
(3) Sulfur
(4) Argon
Which of the following elements is a noble gas?
(1) Nitrogen
(2) Neon
(3) Sodium
(4) Sulfur
Fill in the blank: The first period of the periodic table contains only _______ elements.
Fill in the blank: The horizontal rows in the periodic table are called _______.
Fill in the blank: The vertical columns in the periodic table are called _______.
The element with atomic number 12 is classified as a _______.
State whether the following statement is true or false: Elements in the same period have the same number of electron shells.
State whether the following statement is true or false: Nonmetals are found on the left side of the periodic table.
True or False: Elements in the same period have the same number of valence electrons.
True or False: The periodic table is arranged in order of increasing atomic mass.
