Isotopes and Ions

What is an isotope? 

• A charged atom
• An atom with different amounts of neutrons
• An atom with different amounts of protons
• A neutral atom

Isotopes of an element have a different number of...

• Protons

• Neutrons

• Electrons

• Mass

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How many neutrons in C-14?

• 6
• 7
• 14
• 8

Sodium (Na) has 1 electron (e-) in its outer shell (orbital). How can it make a full outer shell? (HINT: Think of which option would be "easier" for the atom.)

• Giving away or donating the outer electron.

• Taking on or accepting 7 more electrons.

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Knowledge Check:

Why does Chlorine (Cl) become a -1 charge?

• Cl donates an e-, so it now has 1 less negative (-) charge.

• Cl accepts an e-, so it now has 1 more negative (-) charge.

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Elements in the same group have the same number of:

• protons

• neutrons

• valence electrons

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How many VALENCE ELECTRONS does Lithium have?

• 3

• 1

• 2

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How many VALENCE ELECTRONS does Nitrogen have?

• 7

• 5

• 2

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How do positive ions form?

• by gaining electrons
• getting compliments
• by losing electrons
• gaining more protons

Where can you find a list of all the known elements?

• Table of Contents

• Periodic Table of Elements

• Title Page

• Taxonomy

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