Science Common Sense

1500 - What is the pattern of elements arranged in the periodic table based on atomic number?

The pattern of elements in the periodic table is based on the Atomic Number, which is the number of protons in an atom's nucleus. The elements are arranged in order from smallest to largest atomic number.

The elements are arranged in rows called "periods" and columns called "groups" or "families." Elements in the same group have similar properties because they have the same number of electrons in their outer shell.

Here's a simple way to think about it:

This helps us to see the relationships between elements and make predictions about their properties.

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