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What are the first 20 elements at room temperature?
H
What are the first 20 elements in the periodic table?
HydrogenHeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeonSodiumMagnesiumAluminumSiliconPhosphorousSulphurChlorineArgonPotassiumCalciumHope this helped :)
When Mendeleev developed the first periodic table there were approximately how many elements known?
By 1869, a total of 63 elements had been discovered.
What are the 20 lightest elements?
The first 20 elements are Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen,Oxygen, Flourine,Neon,Sodium,Magnesium, Aluminium,Silicon,Phosporous,Sulphur, Chlorine, Argon, Pottasium, and Calcium. The numbers on the top right are the mass of the element.
What are the first 20 elements of the periodic table and how do they exist?
first 20 elements: 1 H 2 He 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar 19 K 20 Ca
What are the first 20 elements at room temperature?
H
Mass number of first 20 elements?
Mass number is term used for isotopes, not for elements. And it is boring to list here all the isotopes of the first 20 elements.
What are the first 20 elements in the periodic table?
HydrogenHeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeonSodiumMagnesiumAluminumSiliconPhosphorousSulphurChlorineArgonPotassiumCalciumHope this helped :)
Graph the atomic radii for the first 20 elements?
give me graph paper first!!!!!!!!!!!!!!
What are properties of first 20 elements?
i dk why asking me google it i am dumb
Valencies of the first 20 elements?
Period 1 (Elements 1 and 2)1s1 - 1s2Period 2 (Elements 3 - 10)2s1 - 2s22p6Period 3 (Elements 11 - 18)3s1 - 3s23p6Period 4 (Elements 19 and 20)4s1 - 4s2
What are 20 different colors?
enumeratie 20 colors then its definiti on
What are the 1st 20 elements of the periodic table made of?
The first twenty elements are made up f different things
Oxidation number for first 20 elements?
H -->+1 He --> 0 Be --> B
What element of the first eighteen elements has the highest melting point?
Carbon (C) has the highest melting point out of all the elements, and so, as it's in the first 20 elements, it has the highest melting point of the first 20 elements too. Its melting point is 3823K.
Which element has 5 electrons?
Well i think that will be boron according to the first 20 elements.
Which of the first 20 elements has the most unpaired electrons?
Nitrogen = 3 unpaired electrons.
