1.

State whether the following statements are true (T) or false (F).a. The hard disk may be divided into several parts or drives by many partitions.b. Once a filename is created cannot be changed.c. You may use question mark (?) in lieu of a single unknown character to search a file.d. The filename is made up of string of numbers.AUX is an invalid filename.Le2​

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Answer:

block of the periodic table is a set of elements unified by the orbitals their valence ELECTRONS or vacancies lie in.[1] The term appears to have been first used by Charles Janet.[2] Each block is named after its characteristic orbital: s-block, p-block, d-block, and f-block.

A long periodic table showing, from left to right: the s-, d-, f-, and p-blocks. The f-block, normally shown as a footnote, here splits the d-block into TWO. While this splitting is the more common form in the literature, a minority advocates placing the f-block between the s- and d-blocks.[1]

The block names (s, p, d, and f) are derived from the spectroscopic NOTATION for the value of an electron's azimuthal quantum number: SHAPE (0), principal (1), diffuse (2), or fundamental (3). Succeeding notations proceed in alphabetical ORDER, as g, h,



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