What word element means hidden?
KRYPTON (36) Because it is colorless, odorless, and so difficult to discover, krypton takes its name from the Greek word for “hidden,” kryptos.
What element means stranger?
Xenon, a rare gas (from xenos, stranger).
What does element stand for?
Atomic Names and Symbols
What are the unidentified elements?
When Mendeleev proposed his periodic table, he noted gaps in the table and predicted that then-unknown elements existed with properties appropriate to fill those gaps. He named them eka-boron, eka-aluminium, eka-silicon, and eka-manganese, with respective atomic masses of 44, 68, 72, and 100.
What is another word for hidden or secret?
1 clandestine, hidden, concealed, covert. 1, 2 private, confidential. 3 secretive. 6 occult, obscure, mysterious.
What is the full meaning of hidden?
1 : being out of sight or not readily apparent : concealed. 2 : obscure, unexplained, undisclosed. Other Words from hidden Synonyms Example Sentences Learn More About hidden.
What family is xenon in?
Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
What block is xenon in?
|Group||18||−111.75°C, −169.15°F, 161.4 K|
|State at 20°C||Gas||132Xe|
|Electron configuration||[Kr] 4d105s25p6||7440-63-3|
What is an elemental symbol?
An element symbol is a one- or two-letter abbreviation for a chemical element name. When a symbol consists of two letters, the first letter is always capitalized, while the second letter is lowercase. Element symbols also can refer to alchemy symbols for the elements or to the symbols used to describe isotopes.
How do you represent an element?
In the typical periodic table, each element is listed by its element symbol and atomic number. For example, “H” denotes hydrogen, “Li” denotes lithium, and so on. Most elements are represented by the first letter or first two letters of their English name, but there are some exceptions.
What are the 6 unknown elements?
Mendeleev’s Predicted Elements
- Eka-boron (scandium)
- Eka-aluminium (gallium)
- Eka-manganese (technetium)
- Eka-silicon (germanium)
What is the use of hidden element in HTML?
Introduction to HTML Hide Element. The hidden global attribute in HTML5 is a Boolean attribute. It stipulates that the targeted element is further relevant or not for the HTML document. One such example of using the hidden attribute is that it can be utilized to cover/uncover any particular content present on the HTML webpage which is not
What is the hidden attribute?
Definition and Usage The hidden attribute is a boolean attribute. When present, it specifies that an element is not yet, or is no longer, relevant. Browsers should not display elements that have the hidden attribute specified.
What is hidden hidden global in HTML?
hidden. The hidden global attribute is a Boolean attribute indicating that the element is not yet, or is no longer, relevant. For example, it can be used to hide elements of the page that can’t be used until the login process has been completed. Browsers won’t render elements with the hidden attribute set.
Is it possible to hide the description of elements?
While hiding the descriptions implies that they are not useful on their own, they could be written in such a way that they are useful in the specific context of being referenced from the element that they describe.