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
Lelu [443]
3 years ago
5

1#

Chemistry
1 answer:
Black_prince [1.1K]3 years ago
8 0

Answer:

1= Magnesium

2 = Option 3 =  1s² 2s² 2p⁶

Explanation:

An electrically neutral atom consist of equal number of protons and electrons.

The answer for 1st q is magnesium because the electronic configuration showed twelve number of electrons. The atomic number of magnesium is twelve that's why this configuration is of Mg.

Mg₁₂ =  1s² 2s² 2p⁶ 3s²

The second answer is option three because has atomic number ten and third electronic configuration have ten electrons.

Ne₁₀ = 1s² 2s² 2p⁶

It is stable electronic configuration. Neon is inert because of this electronic configuration. The outer most shell is completely filled.

You might be interested in
Show a correct numerical setup for calculating the
valkas [14]

0.25 moles of CO2 is present in 11 grams of CO2.

Explanation:

A mole represents the number of chemical entities in an element or molecule.

Number of moles of an element or molecule is determined by the formula:

The Number of moles (n) = weight of the atom given  ÷ atomic or molecular weight of the one mole of the element or molecule.

Themolar mass of one mole of carbon dioxide is:

12+ ( 16×2)

= 44 gram/mole

The given weight is 44 grams of carbon dioxide.

Putting the values in the equation,

n= 11 gms÷44 gms/ mole

n   = 0.25 mole

7 0
3 years ago
Which of the following is a small-scale, sudden natural change?
stellarik [79]
D because yes it works very slow 
7 0
3 years ago
For the reaction below, if the rate of appearance of Br2 is 0.180 M/s, what is the rate of disappearance of
brilliants [131]

Answer:

–0.360 M/s

Explanation:

7 0
3 years ago
URGENT!! I will have brainliest!!!
Vlad [161]

Answer:

sorry idk

Explanation:

3 0
3 years ago
Why vitamin A(retinol) transported by chylomicrons ?
OLga [1]

Answer:

from the small intestine (RE = retinyl ester; ROH = ret- inol. CM = chylomicron remnant). is split at least one intact molecule of retinol, retinal.

4 0
3 years ago
Other questions:
  • Calculate the number of moles of O2 gas held in a sealed 2.00 L tank at 3.50 atm and 25 ℃.
    9·1 answer
  • What would happen if Phosphorus disappeared?
    10·1 answer
  • Which is the correct way to write 602,200,000,000,000,000,000,000 in scientific notation?
    8·2 answers
  • Atom with the largest atomic radius in group 18
    15·1 answer
  • What volume of nitrogen dioxide is formed at 735 torr and 28.2 °C by reacting 3.56 cm3 of copper (d = 8.95 g/cm3) with 200 mL of
    9·1 answer
  • Why is there a vast amount of salt water on Earth?
    9·1 answer
  • The distance north or south of the equator is called
    10·1 answer
  • Which of these statements describes a physical property of hydrogen? Group of answer choices it is found in acids. it is less de
    6·1 answer
  • Please help pleaseeeeee
    15·1 answer
  • How many kJ of heat do you need to raise the temperature of 200 g of Aluminum from 80 °C to 100 °C?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!