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Periodic Table Basics

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Questions and Answers

What is the periodic table primarily used for?

Arranging chemical elements into rows and columns (correct)

Mapping out the locations of elements in the universe

Studying the behavior of subatomic particles

Describing the structure of the atom

What is the significance of elements in the same group in the periodic table?

They belong to the same period

They have different physical properties

They have similar chemical characteristics (correct)

They have identical atomic numbers

According to the periodic table, how does metallic character change across a period?

Decreases from left to right (correct)

Remains constant across a period

Decreases from top to bottom

Increases from left to right

Who formulated the first generally accepted periodic table?

Dmitri Mendeleev (B) Signup and view all the answers

What fundamental discovery was recognized in the late 19th century related to the periodic table?

The periodic law (A) Signup and view all the answers

Which of the following is true about the periodic table?

It arranges elements based on increasing atomic number (B) Signup and view all the answers

What is the significance of the group number in the periodic table?

It represents the number of valence electrons in the element (A) Signup and view all the answers

How does the metallic character change as you move from left to right across a period in the periodic table?

It decreases (A) Signup and view all the answers

Which of the following is not a trend observed in the periodic table?

Increase in metallic character from top to bottom within a group (D) Signup and view all the answers

What is the effect of increasing nuclear charge on the atomic radius of an element?

Atomic radius decreases due to increased nuclear attraction (A) Signup and view all the answers