Contextual selectors
In Aristotle's hierarchy, the four elements (earth, water, air, fire) are classified based on their perceived qualities. Earth is considered the heaviest and most stable element, followed by water, air, and fire. This hierarchy reflects a belief that the elements are arranged in order of increasing rarity and potency.
The * selector is used to match any element in the hierarchy.
It tells you the atomic number, the number of protons, the density, its relations to other elements, and its characteristics.
D smallest element in data hierarchy is FIELD.REASON: It (field) is d smallest bit of information found in a record.
A parent element contains one or more child elements within it. It is higher up in the hierarchy than its children and can contain attributes and content. Parent elements are used to organize and structure the relationships between different elements in HTML and XML documents.
Atomic number and it also tells the number of protons and electrons in an atom it is on top of the element symbol.
Valence Electrons are the outermost electrons in an element and they are used for bonding with other elements.
After the IUPAC Recommendation 2002 - Naming new elements: The elements can be named after a mythological concept, a mineral, a place or a country, a property or a very known scientist.
The plural of element is elements. As in "our planet has many elements".
An ELEMENT can not be separated into other elements.
the elements in the periodic table are arranged according to the increasing atomic number and hence the elements are divided into 18 groups hence it would be easy to identify the elements
Reactivity is associated with position. Chemical properties of element can be determined from its position.