Block Elements is a Unicode block containing square block symbols of various fill and shading. Used along with block elements are box-drawing characters...
6 KB (327 words) - 06:28, 28 May 2025
A block of the periodic table is a set of elements unified by the atomic orbitals their valence electrons or vacancies lie in. The term seems to have been...
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HTML element (redirect from Block level elements)
model". This is applied to those elements that CSS considers to be "block" elements, set through the CSS display: block; declaration. HTML also has a similar...
114 KB (12,895 words) - 06:33, 11 June 2025
Periodic table (redirect from Periodic table of the elements)
evident. The table is divided into four roughly rectangular areas called blocks. Elements in the same group tend to show similar chemical characteristics. Vertical...
252 KB (27,181 words) - 17:20, 17 June 2025
Transition metal (redirect from Transition elements)
transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are sometimes...
40 KB (4,500 words) - 18:28, 24 May 2025
Period 7 element (redirect from Period 7 elements)
f-block is erroneously shifted one element to the right, so that lanthanum and actinium become d-block elements, and Ce–Lu and Th–Lr form the f-block tearing...
22 KB (1,903 words) - 03:40, 25 May 2025
Box-drawing characters (redirect from Block-drawing characters)
or other special symbols. Other types of box-drawing characters are block elements, shade characters, and terminal graphic characters; these can be used...
21 KB (1,322 words) - 05:14, 18 June 2025
Lanthanide (redirect from Lanthanoid series elements)
one of the lanthanides are f-block elements, corresponding to the filling of the 4f electron shell. Lutetium is a d-block element (thus also a transition...
109 KB (10,480 words) - 05:57, 26 May 2025
Main-group element (redirect from Main group elements)
groups 13 to 18 (p-block). The s-block elements are primarily characterised by one main oxidation state, and the p-block elements, when they have multiple...
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Actinide (redirect from Actinide elements)
actinide is still allowed. Actinium through nobelium are f-block elements, while lawrencium is a d-block element and a transition metal. The series mostly corresponds...
123 KB (11,545 words) - 07:00, 2 June 2025
Period 6 element (redirect from Period 6 elements)
that lanthanum and actinium become d-block elements, and Ce–Lu and Th–Lr form the f-block, tearing the d-block into two very uneven portions. This is...
59 KB (6,620 words) - 19:10, 19 May 2025
Period 4 element (redirect from Period 4 elements)
18 elements beginning with potassium and ending with krypton – one element for each of the eighteen groups. It sees the first appearance of d-block (which...
21 KB (2,173 words) - 09:28, 27 August 2024
Look up Block, Blocks, block, blocked, or blocks in Wiktionary, the free dictionary. Block or blocked may refer to: Block programming, the result of a...
6 KB (770 words) - 14:06, 11 May 2025
Geometric Shapes block: Box-drawing characters Dingbat Tombstone, the end of proof character Other Unicode blocks Box Drawing Block Elements Geometric Shapes...
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Period 1 element (redirect from Period 1 elements)
exactly two elements. Although both hydrogen and helium are in the s-block, neither of them behaves similarly to other s-block elements. Their behaviour...
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shell corresponds to a row in the table. In the f-block and p-block of the periodic table, elements within the same period generally do not exhibit trends...
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a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the 14 f-block columns, between...
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Nitride (section Nitrides of the s-block elements)
ISBN 0-8155-1392-5. Gregory, Duncan H. (2001). "Nitride chemistry of the s-block elements". Coord. Chem. Rev. 215: 301–345. doi:10.1016/S0010-8545(01)00320-4...
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chemical elements and their atomic properties, ordered by atomic number (Z). Since valence electrons are not clearly defined for the d-block and f-block elements...
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Period 5 element (redirect from Period 5 elements)
5 element is one of the chemical elements in the fifth row (or period) of the periodic table of the chemical elements. The periodic table is laid out in...
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into f-block elements; The elements ( 57La: 5.18 eV) and ( 89Ac: 5.17 eV) have only very slightly lower IP's than their preceding elements ( 56Ba:...
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Metal (redirect from Metallic elements)
Metallic elements are primarily found as lithophiles (rock-loving) or chalcophiles (ore-loving). Lithophile elements are mainly the s-block elements, the...
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filled d orbitals (d10). The d-block contraction is best illustrated by comparing some properties of the group 13 elements to highlight the effect on gallium...
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to ionize or share. For example, the p-block elements of the 4th, 5th and 6th period come after d-block elements, but the electrons present in the intervening...
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Lanthanide contraction (redirect from F-block contraction)
otherwise expected atomic radii and ionic radii for the subsequent d-block elements starting with 71, lutetium. This effect causes the radii of transition...
18 KB (2,150 words) - 09:38, 11 June 2025
chemical elements have the same term symbol for each column in the s-block and p-block elements, but differ in d-block and f-block elements where the...
57 KB (5,847 words) - 09:33, 3 June 2025
Chemical element (redirect from Chemical Elements)
Nature's Building Blocks: An A–Z Guide to the Elements. Oxford University Press. ISBN 978-0-19-850340-8. Gray, T. (2009). The Elements: A Visual Exploration...
76 KB (10,680 words) - 12:04, 14 June 2025
Group 3 element (redirect from Ungrouped elements)
focusing on superheavy elements since clarified that the "15th entry of the f-block represents the first slot of the d-block which is left vacant to...
53 KB (5,863 words) - 16:54, 23 May 2025
Heavy metals (redirect from Heavy elements)
(ore-loving). Lithophile heavy metals are mainly f-block elements and the more reactive of the d-block elements. They have a strong affinity for oxygen and mostly...
150 KB (12,585 words) - 13:07, 12 June 2025
A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode...
8 KB (826 words) - 08:04, 6 June 2025