which size would be best as a poster above a desk?

That will depend on the specifics. If you are looking to utilize this chart as reference in a bedroom environment, then going with either the 15 x 20 or 18 x 24 option is a good choice depending on the wall space available. If this is for a classroom environment then maybe going with the larger 24 x30 chart is the better option.

Are the semimetals featured as being blue or black? (Just asking cause the pictures show two different things)

The Semimetals are blue as in the primary image. The Images showing black must be a faulty render output. Thanks for bringing this to our attention.

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Periodic Table Science Poster Laminated Chart Teaching Elements Classroom Black Decoration Premium Educators Atomic Number Guide 15x20

Periodic Table Science Poster Laminated Chart Teaching Elements Classroom Black Decoration Premium Educators Atomic Number Guide 15x20

Product ID: 124320029

🎨Color-coded element groups

📏Multiple size options (15x20, 18x24, 24x30)

🛡️3 mil laminated durability

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Description

🧪 Elevate your science space with the ultimate periodic table poster—where learning meets style!

PREMIUM MATTE GLOSS - Glossy yet matte finish reduces glare while enhancing readability from a distance.
INSTANT VISUAL CLARITY - Color-coded groups make complex chemistry concepts effortlessly understandable at a glance.
VERSATILE SIZE OPTIONS - Available in three sizes to perfectly fit any bedroom, classroom, or study space.
DURABILITY MEETS DESIGN - 3-mil laminated finish resists water, tears, and dust for long-lasting classroom use.
EDUCATOR APPROVED LAYOUT - Designed with teachers in mind to simplify element correlation and boost student engagement.

The Young N Refined Periodic Table Poster is a premium laminated educational chart designed for classrooms and bedrooms. Featuring a durable 3-mil plastic finish, it resists water, tears, and dust, ensuring longevity. Its color-coded element groups simplify chemistry learning, while multiple size options offer versatile display choices. Crafted with educators in mind, this 2023 edition combines clarity, durability, and style to enhance science education.

Specifications

ASIN	B07BDG4T51
Age Range Description	Kid
Best Sellers Rank	187,095 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 113 in Science Education Charts & Posters
Brand Name	Young N Refined
Color Family	Metallic
Colour	white
Country of Origin	China
Cover Material	Plastic
Customer Package Type	Rigid cardboard box or Custom-fitted mailer
Customer Reviews	4.6 4.6 out of 5 stars (1,086)
Finish Type	Glossy
Frame Material	Plastic
Frame Type	Unframed
Indoor Outdoor Usage	Indoor
Is Framed	No
Is Original Artwork	No
Item Dimensions L x W	1L x 406W millimetres
Item Shape	Rectangular
Item Weight	1.5 Ounces
Manufacturer	Young N Refined
Material	Laminated
Mounting Type	Wall Mount
Number Of Panels	1
Number of Items	1
Orientation	Landscape
Paint Type	Watercolor
Paper Finish Type	Matte
Pattern	Einfarbig
Product Style	scientist
Recommended Uses For Product	Educational: teaching and learning about the periodic table of elements in a classroom or similar educational setting
Room Type	Bedroom
Seasons	all, fall
Size	0.1L x 40.6W cm
Special Features	Durability, Easy Maintenance, Educational Effectiveness
Subject Character	Chemistry
Theme	Educational,Number,Science
UPC	689559055701
Unit Count	1 count
Wall Art Form	Poster

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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