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
Anika [276]
3 years ago
15

1. Explain how groups 1A-8A in the periodic table are organized by their number of valence electrons.

Chemistry
1 answer:
nirvana33 [79]3 years ago
6 0

Explanation:

1. Explain how groups 1A-8A in the periodic table are organized by their number of valence electrons.

The valence electrons in an atom are the outermost shell electrons. They are the most loosely held electrons in an atom.

Coincidentally, the periodic table of elements divided into vertical groups and horizontal periods can be said to be arranged according to the number of valence electrons.

  • Atomic numbers are used to arrange elements on the periodic table.
  • Down a group, the number of electronic shell increases. More electrons are added to new energy levels.
  • As we move from left to right across a period, the number of electrons in elements increases but electronic shell is the same.
  • Down a group electronic shell increases but the number of valence electrons are the same.
  • All elements in Group 1A has just one valence electrons, Group 2A has two valence electrons.........Group 8A has eight valence electrons.
  • Moving across groups is synonymous to moving from left to right on the periodic table.
  • Due to this trend, the periodic table is arranged based on the number of valence electrons.

3. explain how you know the number of valence electrons for each group.

The number of valence electrons in a group is the group number:

   Group      Number                     valence electrons

              1A                                                 1

              2A                                                2

              3A                                                 3

              4A                                                 4

               5A                                                5

               6A                                                6

               7A                                                7

               8A                                                8

learn more:

Periodic table brainly.com/question/1971327

#learnwithBrainly

You might be interested in
A mixture of iron and sulfur can be separated by A.magnetic attraction
Elenna [48]
A. Magnetic attraction
6 0
3 years ago
How many atoms are in 2.5 mole of F
mel-nik [20]

Answer: 1.5 x 10^24

Explanation: Just multiply 2.5 by avagadro's number 6.2 x 10^23 to get the answer.

4 0
2 years ago
What is the lowest common multiple of 4, 10, and 16?
jonny [76]
The least common multiples of 4, 10, and 16 is 80.
3 0
2 years ago
Determine the empirical formula of an oxide of silicon from the following: mass of crucible= 18.20g, mass of crucible +silicon =
lyudmila [28]
The required empirical formula of the silicon oxide is SiO2.
4 0
2 years ago
A vial is filled with room temperature water, and blue cold water has been placed at the bottom. A warm water bag sits next to t
MrRa [10]

Explanation:

In the context, a vial which is used in store medical samples is filled with water at room temperature. And the vial is kept on a cold water. Also a water bag containing warm water is kept near the vial.

The cold water kept at the bottom of the vial is having lower kinetic energy while warm water will have higher kinetic energy than the others. Since the water in the vial is at room temperature and it is in touch with the cold blue water, the water in the vial will loose or give its temperature to the cold blue water through conduction as well as convection process since temperature always flows from a hot body towards the cold body.

On the other hand, the warm water placed next tot he vial will give its temperature to the atmosphere.  

5 0
3 years ago
Other questions:
  • A gene is a to a chromosome as
    15·1 answer
  • Can anyone answer this ASAP I need it quick
    12·1 answer
  • The reaction 4al(s) + 3o2(g) --> 2al2o3(s) ?h = -3351 kj is _____, and therefore heat is _____ by the reaction
    11·1 answer
  • Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no rea
    10·1 answer
  • How many atoms total are present in one molecule of 5-methyl-2 hexanol C7H16O
    11·1 answer
  • In 1901, Thomas Edison invented the nickel-iron battery. The following reaction takes place in the battery. Fe(s) + 2 NiO(OH)(s)
    14·1 answer
  • For the equilibrium, N2O4(g)<----> 2NO2(g), the equilibrium constant Kp = 0.316. Calculate the equilibrium partial pressur
    13·2 answers
  • What is hydroxide ion concentration, [OH-], in a 1.37 x 10^-5 M solution of barium hydroxide (Ba(OH)2)?
    15·1 answer
  • A sample of iron with a mass of 50.0 grams absorbs 2500 J of thermal energy. How much would the temperature of this sample chang
    8·1 answer
  • How many grams of H2O are needed to produce 150 g of Mg(OH)2? (Molar mass: H2O = 18.02 g/mol; Mg(OH)2 = 58.33 g/mol )
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!