Free Printable LMS TEK Check 8.5a

Worksheets

Name

Class

Date

If Oxygen (O) has 8 electrons in the atoms electron cloud, then how many protons does it have in the nucleus?

Nuetrons are a subatomic particle found in the ___________ part of an atom and have this kind of charge, ___________ (N.C.).

Electron Cloud, Positive

Nucleus, Nuetral

Nucleus, Positive

Proton, Negitive

An atom has a mass number of 36 and an atomic number of 16, how many neutrons does the atom have?

Using your periodic table, what element is in the third period and group 2?

Fe - Iron

Mg - Magnesium

Al - Aluminum

Ca = Calcium

Which two groups on the Periodic Table are the MOST reactive?

Group 1 and Group 7 (17)

Group 22 and Group 26

Group 18

The Atomic Mass is equal to the total number of.....

protons + electrons

electrons + neutrons

protons + neutrons

Elements in the same __________ will have similar chemical properties and the same number of valence electrons.

Group

Period

How many electrons does potassium K contain? (click to see image)

Looking at the Bohr model for Argon (Ar). How many energy levels does it have and number of valence electrons?

4 and 8

3 and 20

4 and 20

3 and 8

10.

If my atomic number is 19. Then what element would I be and how many protons would I have.

Fluorine and 9

Magnesium and 12

Potassium and 19

Krypton and 19

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