1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gregori [183]
3 years ago
10

Where are the elements that have the same valence electrons found in the periodic table?

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0
The elements that have the same valence are, mainly, in the same principal groups (principal columns) of the periodic table.


The principal columns are 1, 2, 13, 14, 15, 16, 17 and 18.


For example:


1) the elements with valence 1+ are in the first column:H,  Li, Na, K, Rb, Cs, Fr.

2) The elements with valence 2+ are in the second column: Be, Mg, Ca, Sr, Ba, Ra.

3) The elements with valence 2- are in the column 16: O, S, Se, Te, Pb

But also those elements may have other valences: S, Se and Te, have also valences 2, 4 and 6. And Pb have valences 2 and 4.


4)  The elements with valences 1-, 1, 3, 5 and 7 are in the column 17: Cl, Br, I, At.

F, the first element of group 16, has valence 1- and 1+ 



stepladder [879]3 years ago
3 0

within any group, that should be one of the multiple choices given.

You might be interested in
Cost of production reports can also be used to compare the materials output quantity to the a.administrative staff input quantit
valentinak56 [21]

Answer:

b.materials input quantity

Explanation:

A cost of production report shows the following:

  • total and unit costs transferred from preceding department
  • materials, labor , factory Overhead added by the department
  • unit costs added by the department
  • total and unit costs accumulated to the end of operations
  • the cost of beginning and ending work in process inventories
  • the cost transferred to the next department

A cost of production report determines periodic total and unit costs.

Either in the cost of production report or in the supporting schedule each item of material used is listed, every labor operation is shown separately,factory overhead components are noted individually, and a unit cost is derived for each item.

A Quantity Schedule Of Cost of Production report  shows the following

  • units started in process
  • units transferred to next department
  • units still in process
  • units lost in process

7 0
3 years ago
Which list of solutions is arranged in order from highest boiling point to lowest boiling point?
Oxana [17]

In determining the boiling point of solutions, always take note of the number of ions that will dissociate in the solution. It does not depend on the nature of the substance. The greater the number of ions dissociated, the greater is the boiling point of the solution. 

5 0
3 years ago
A student conducted an experiment to test the effect of the digestive enzyme pepsin on cooked egg white and potato in the presen
marta [7]
<span>A student conducted an experiment to test the effect of the digestive enzyme pepsin on cooked egg white and potato in the presence of hydrochloric acid at a pH of 1. The most probable inference would be: . Pepsin digests potato because it mainly contains starch. Therefore, the answer would be letter B.</span>
3 0
4 years ago
Read 2 more answers
PLZ HELP IT BEING TIMED!!!!!! PLZ ANSWER!!!!!
Wittaler [7]

Answer:

YIKES. a bit late. Answers include 1, 2, 3

Explanation:

6 0
3 years ago
The half-life of a specific element was calculated to be 5,200 years. What percentage of a sample of the pure element will remai
Snezhnost [94]
25% is the answer to the question
7 0
4 years ago
Read 2 more answers
Other questions:
  • Why is it important for an scientist to be open minded but skeptical
    15·1 answer
  • What is the purpose of a unit conversion?
    15·1 answer
  • NH3+H2SO4=(NH4)2SO4 balance equation
    12·1 answer
  • Data collected from moonquakes shows that _____.
    8·1 answer
  • How much atp is produced from a single glucose molecule in each reaction set?
    14·1 answer
  • What is the volume of 2.1 moles of chlorine gas (Cl2) at standard temperature and pressure (STP)?
    14·1 answer
  • Name two elements in the modern periodic table that break Mendeléey's rule that the elements should be arranged in order of rela
    13·1 answer
  • A spring running horizontally has areas with the coils closer together and areas with them farther apart. A label A points to ar
    14·2 answers
  • Calculate the density (g/ml) of mineral that has volume (total space occupied by something) of 3.8 ml and a mass of 22.4 g.
    7·1 answer
  • Could you please show work if you could
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!