Contextual selectors
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.
A column of elements in the periodic table is called a group or
D smallest element in data hierarchy is FIELD.REASON: It (field) is d smallest bit of information found in a record.
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.
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
there are 3 elements. internal element, external element and situational element
The plural of element is elements. As in "our planet has many elements".
An ELEMENT can not be separated into other elements.
Reactivity is associated with position. Chemical properties of element can be determined from its position.
perfomance and size