What are the various tags provided for better structuring in HTML5?

The various tags provided for better structuring in HTML 5 are:
a.) <article> - This tag defines an article.
b.) <aside> - It defines content other than the page content.
c.) <bdi> - This tag isolates a part of text for formatting in a different direction from other text.
d.) <command> - It defines a command button to be invoked by the user.
e.) <details> - It defines additional details that can be viewed or hidden by the user.
f.) <dialog> - It defines a dialog box.
g.) <figure> - This tag specifies content like illustrations, diagrams, photos, code listings, etc.
h.) <figcaption> - It is used to provide a caption for a <figure> element
i.) <footer> - This tag defines a footer for a document or section
j.) <header> - This tag is used to define a header for a document or section
k.) <hgroup> - When there are multiple levels in a heading, it groups a set of <h1> to <h6> elements.

l.) <mark> - It defines highlighted text.
m.)<meter> - It defines a scalar measurement within a known range.
n.) <nav> - It defines links for navigation
o.) <progress> - This tag exhibits the progress of a task
p.) <ruby> - It defines a ruby annotation for East Asian typography
q.) <rt> - It defines an explanation/pronunciation of characters for East Asian typography
r.) <rp> - This tag tells the system what to display in browsers that do not support ruby annotations.
s.) <section> - It defines a section in a document
t.) <summary> - It provides a visible heading for a <details> element
u.) <time> - This tag defines a date/time
v.) <wbr> - This tag defines a line-break

6. Which elements of HTML 4.01 are no more a part of HTML5?

Following elements of HTML 4.01 are no more a part of HTML 5:
<acronym>
<applet>
<basefont>
<big>
<center>
<dir>
<font>
<frame>
<frameset>
<noframes>
<strike>
<tt>