Among the Main-Group Elements the Number of Semimetals Is

question 91

Multiple Choice

Among the main-group elements the number of semimetals is

• A)five.
• B)six.
• C)seven.
• D)eight.

---

Definitions:

Civil Rights Era

A historical period, primarily during the 1950s and 1960s in the United States, characterized by mass mobilization and movements to end racial segregation and discrimination against African Americans and to secure legal recognition and federal protection of the citizenship rights enumerated in the Constitution and federal law.

Second Reconstruction

A term used to describe the period of civil rights struggle and legislative action in the United States during the 1960s and 1970s.

Black Officeholders

Refers to African American individuals who hold public office, which has historically marked significant progress in political representation and civil rights.

Reconstruction

The period following the Civil War (1865-1877) during which the United States made efforts to reintegrate Southern states into the Union and redefine the legal status of African Americans.