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
Alona [7]
3 years ago
15

Based on silicon's position on the periodic table, it has

Chemistry
2 answers:
pashok25 [27]3 years ago
6 0

Answer: A. 14 electrons, which include 4 valence electrons in the third energy level and 10 electrons distributed over the first two energy levels.

Explanation:

Silicon is an element with atomic number 14 and thus contain 14 electrons. It is a p block element as the last electron enters the p orbital. The nearest noble gas is neon with 10 electrons.

The electrons are filled according to Afbau's rule in order of increasing energies and thus the electronic configuration in terms of noble gs configuration is:  

Si:14:1s^22s^22p^63s^23p^2

The valence electrons are the electrons present in last shell i.e n= 3, thus there are 4 valence electrons, 8 electrons in n= 2 and 2 electrons in  n= 1 energy level. Thus total of 10 electrons in first two energy levels.

monitta3 years ago
5 0
A. 
The first energy level has 2 electrons, the second has 8, and the third has 4
You might be interested in
How much heat is needed to change 47grams of water into ice
Elenna [48]

the answer you are looking for is 4.22 kj.

3 0
3 years ago
40 PIONTS!! PLZZZZ HELP
never [62]

Lithium oxide is able to undergo both the processes of dissolution and dissociation.

Dissociation refers to the break down a chemical substance into its constituents. Ionization refers to the loss of electrons from a chemical specie while dissolving refers to the ability of a solid to form a solution.

Let us now look at each of the following species;

  • Lithium oxide undergoes dissolution and dissociation.
  • Magnesium nitride undergoes dissolution and dissociation.
  • Hydrobromic acid  undergoes dissolution and dissociation.

Learn more about ionization: brainly.com/question/1602374

8 0
2 years ago
Which of the following is an example of an exothermic reaction?
xz_007 [3.2K]

Answer:

d instant ice packs d is your answer

6 0
1 year ago
Calculate the energy of attraction between a cation with a valence of 1 and an anion with a valence of 3 the centers of which ar
Marrrta [24]

Answer:

The energy of attraction between the cation and anion is 1.231 X 10⁻¹¹ J

Explanation:

Let the charge on the cation be q₁

Also let the charge on the anion be q₂

A cation q₁ with a valence of 1, has a charge of 1 X 1.602×10⁻¹⁹C = 1.602×10⁻¹⁹C

An anion q₂ with a valence of 3, has a charge of 3 X 1.602×10⁻¹⁹C = 4.806 ×10⁻¹⁹C

The distance between the two charges is 7.5nm = 7.5 X10⁻⁹m

Energy of attraction = \frac{Kq_1q_2}{r^2}

Where k is coulomb's constant = 8.99 X 10⁹ Nm₂/C₂

Energy of attraction = \frac{8.99 X 10^9 (1.602X10^{-19})(4.806 X10^{-19})}{(7.5X10^{-9})^2}

Energy of attraction = 1.231 X 10⁻¹¹ J

Therefore, the energy of attraction between the cation and anion is 1.231 X 10⁻¹¹ J

8 0
3 years ago
How many grams of silver iodide (AgI) are produced from the reaction of 411.5 g
garri49 [273]
I don’t know but sorryyyyyy
6 0
2 years ago
Other questions:
  • A solution that contains a lower osmotic pressure than thecytoplasm of a cell is called
    12·1 answer
  • What is the correct balanced equation for the following equilibrium constant expression?
    5·1 answer
  • The buret clamp was used to stabilize the
    7·2 answers
  • A 19.13 gram sample of chromium is heated in the presence of excess bromine. A metal bromide is formed with a mass of 77.92 g. D
    5·1 answer
  • PLEASE HELP NOW! i need help
    7·2 answers
  • The bond angles in SCl2 are expected to be Multiple Choice a little more than 109.5°. 109.5°. 120°. a little less than 109.5°. 1
    10·1 answer
  • NEED HELP ASPA WILL MAKE THE BRAINIEST ANSWER
    14·1 answer
  • PLS ANSWER ALL QUESTIONS FOR 67 POINTS
    6·1 answer
  • Ammonia is produced by the following reaction. 3H2(g) N2(g) Right arrow. 2NH3(g) When 7. 00 g of hydrogen react with 70. 0 g of
    15·1 answer
  • Consider the following voltaic cell:(d) At which electrode are electrons consumed?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!