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Periodic Table REVIEW

Teacher: Mrs. Dallimore
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Across
1
I have 20 neutrons and am found in your teeth and bones.
3
I am the 2nd most abundant element in the Earth's crust and have 14 neutrons.
7
My atomic number is 47 and I am used to make photographic film.
8
My atomic number is 79.
10
I am a member of the boron family and am the most abundant metal in the Earth's crust.
11
I am a noble gas with 2 electrons.
13
I am a metal with 28 electrons.
14
I am a member of the halide family with an atomic number of 53.
17
I am a member of the nitrogen family with 16 neutrons.
18
I am a transition metal with 25 electrons.
20
I have 26 protons.
23
I am a metal that is liquid at room temperature.
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I have 2 electrons in the first shell, 8 in the second shell, and 6 in the third shell.
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I make up 78% of the air and am found in the 15th group.
Down
2
My atomic mass is 35.453.
4
You can find me in the carbon family in the fifth period.
5
I am the only element in the halide family that is a liquid.
6
I am a member of the alkaline earth metals used to make fireworks and medicines.
9
I am a member of the carbon family often mistaken for the end of your pencil.
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I am not really an alkali metal, but since I have only 1 electron, I behave like them.
12
I am a transition metal with 30 electrons useful in making paint.
15
I am a gas with a mass number of 19.
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I am the first element in the fourth period used in making fertilizer.
19
I am a silvery white metal used to make salt.
21
I am a gas with 8 protons and 8 neutrons.
22
I am the head of the carbon family known as the "basis of life".