Skip to Content Go to sign in Skip to Primary Navigation Skip to Secondary Navigation Skip to Page Navigation Skip to Header Navigation Skip to Footer Navigation Read more about accessability options and our navigation

Physics Classroom is making strides to make our site accessible to everyone. Our site contains 6 navigation areas. The Primary, Secondary, and Page Level navigations have a screen reader version of their nav structure that allows using the left and right keys to navigate sibling navigation items, and up or down keys to navigate parent or child navigation items. The others can be navigated using tabs. The Primary Navigation handles the first 2 levels of site pages. The Secondary (which is not always available) handles the 3rd and 4th level of structure. The Page level navigation allows you to navigate the current page's headings quickly. The Header Navigation contains the Light/Dark Mode toggle, Search, Notifications and account login. The Breadcrumb Navigation contains the breadcrumb of the current page. If the current page has a breadcrumb, you can get to it by skipping to the content and tabbing in reverse (shift plus tab). The Footer Navigation contains links such as Privacy, Contact, about and terms. Some resources contain an Audio Player that can be activated by holding down the T key for 3 seconds, and then using K to pause and resume. While not every area of Physics Classroom is usable purely from keyboard and screen reader, we are committed to continue work on making this possible. If you have questions or need additional help, please use this link to contact us.

Return to screen reader navigation

Name That Element - Questions 7 Help

The 100+ existing elements are organized into a table known as the Periodic Table. The familiar looking design of the table conveys information about a number of patterns in the behavior and properties of the elements. One of the patterns is the pattern of atomic number. Atomic number refers to the number of protons in an atom of a given element. The elements are organized by atomic number. This is the integer that is typically printed in each cell of the table. Another property is the property of acting like a metal or a nonmetal. The metal elements are grouped together on the table. The same is true of the nonmetal elements. The two most popular metal families are the Alkalii Metals of Group 1 and the Alkaline Earth Metals of Group 2 (a Group is a column). One grouping of metals is known as the Transition Metals. The transition metal block includes the 10 columns of three rows of elements stretching from Group 3 to Group 12.

There are two similar questions in this Question Group. Each time one of the versions appears, the answer options are presented in a scrambled order. One of the two questions is shown below.
 

Version 1:

I am the transition metal that has four more protons than the alkali metal found in period 4. Who am I?
Chromium (Cr)
Dubnium (Db)
Manganese (Mn)
Rutherfordium (Rf)
Scandium (Sc)
Thorium (Th)
Titanium (Ti)
Uranium (U)
Vanadium (V)

Much of what you need to know to answer this question is discussed in the Fundamentals section above. But if you would like to further your understanding, inspect and study the infographic below on the topic.




Return to Screen Reader Navigation