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The Periodic Table Flashcards

(7 cards)

1
Q

What is the symbol for Magnesium?

A

Mg

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2
Q

All of the elements in a group have what?

A

The same number of electrons in their outer shell

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3
Q

How many electrons does helium have?

A

Two

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4
Q

What does the top number of a symbol mean?

A

Mass number, the total number of protons and neutrons

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5
Q

What does the bottom number of a symbol mean?

A

Atomic number, the number of protons which also tells you the number of electrons

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6
Q

How do you find the number of neutrons in an atom?

A

Subtract the atomic number from the mass number

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7
Q

Which side of the periodic table are metals?

A

The left side under Boron

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