A community for students.
Here's the question you clicked on:
 0 viewing
Needhelpp101
 one year ago
Figure 51 shows a portion of a blank periodic table. Identify the segments labeled A and B.
A. A and B are both periods.
B. A is a period and B is a group.
C. A and B are both groups.
D. A is a group and B is a period.
Needhelpp101
 one year ago
Figure 51 shows a portion of a blank periodic table. Identify the segments labeled A and B. A. A and B are both periods. B. A is a period and B is a group. C. A and B are both groups. D. A is a group and B is a period.

This Question is Closed

cuanchi
 one year ago
Best ResponseYou've already chosen the best response.2the groups are in the columns and the periods in the rows Periods Rows of elements are called periods. The period number of an element signifies the highest unexcited energy level for an electron in that element. The number of elements in a period increases as you move down the periodic table because there are more sublevels per level as the energy level of the atom increases. Groups Columns of elements help define element groups. Elements within a group share several common properties. Groups are elements have the same outer electron arrangement. The outer electrons are called valence electrons. Because they have the same number of valence electrons, elements in a group share similar chemical properties. The Roman numerals listed above each group are the usual number of valence electrons. For example, a group VA element will have 5 valence electrons. http://chemistry.about.com/od/k12gradelessons/a/periodictable_2.htm
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.