the symbol for __ is
what element is this
what is the atomic number of
what is the atomic mass
what is the element of this example
100

Magnesium

Mg

100

W

Tungsten

100

Nitrogen

7

100

Cobalt

58.933

100

coins

Nickel

200

Iron 

Fe


200

Pt

Platinum

200

Helium

2

200

Phosphorus

30.974

200

Flashlights

Krypton

300

Boron

B

300

Pb

Lead

300

Polonium

84

300

Oxygen

15.999

300

Light bulbs

Argon

400

Neon

Ne

400

Ga

Gallium

400

Barium

56

400

Lithium

6.941


400

Toothpaste

Flourine

500

Beryllium

Be

500

S

Sulfur

500

Potassium

19

500

Francium

(223)

500

Poison

Arsenic

M
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