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
wariber [46]
3 years ago
5

The partial electron configuration of an atom with 12 electrons is shown.

Chemistry
2 answers:
Brilliant_brown [7]3 years ago
8 0

The correct answer is 3s2

user100 [1]3 years ago
7 0

I believe this is the electric configuration for magnesium, so, In writing the electron configuration for Magnesium the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for magnesium go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the remaining two electrons in the 3s. Therefore the Magnesium electron configuration will be 1s22s22p63s2.

The answer is B

You might be interested in
What are some reasonable safety precautions for conducting field investigations
katovenus [111]

Answer:

warm clothing hiking sticks safter gear. food water. the basics

8 0
2 years ago
PLEASE HELP ASAP
Kisachek [45]

Answer:

opg

Explanation:

A series of chemical reactions transform Volatile Organic Compounds (VOCs) into substances that combine with nitrogen dioxide to produce PAN (Peroxyacytyl nitrate), yet another element in smog. Nitrogen dioxide in the air also reacts with water vapor to form nitric acid, one of the types of acid in acid rain.

6 0
3 years ago
Calculate the Molarity of 89.94 g NaCl is dissolved in 1249 mL of solution.<br><br> e
Dmitriy789 [7]

Answer:

Molarity = 1.23 M

Explanation:

Given data:

Molarity of NaCl = ?

Mass of NaCl = 89.94 g

Volume of solution = 1249 mL ( 1249/1000 = 1.249 L)

Solution:

First of all we will calculate the number of moles of NaCl.

Number of moles = mass/molar mass

Number of moles = 89.84 g/ 58.5 g/mol

Number of moles = 1.54 mol

Molarity:

Molarity = Number of moles of solute / volume of solution in L

Molarity = 1.54 mol / 1.249 L

Molarity = 1.23 M

8 0
3 years ago
compressing a sample of hydrogen gas to one half its initial volume will have what effect on its pressure
Murrr4er [49]
You would need to double the pressure because of compressing the hydrogens volume to a half.













































6 0
3 years ago
An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom
Leni [432]
24. In an uncharged atom the number of electrons always equals the number of protons, which is the atomic number.
7 0
3 years ago
Read 2 more answers
Other questions:
  • A chef is going to use a mixture of two brands of italian dressing. the first brand contains 9% vinegar, and the second brand co
    5·1 answer
  • A body cools from 60°C to 50°C in 10 minutes. Find its temperature(in °C) at the end of next 10 minutes
    8·1 answer
  • Identify the following as an element or compound <br><br> copper II oxide
    9·2 answers
  • An experiment will
    5·2 answers
  • A- is a weak base. which equilibrium corresponds to the equilibrium constant ka for ha?
    6·1 answer
  • Most metamorphosis processes take place
    10·1 answer
  • Find the molar mass of (NH4)2Cr207.<br> Answer in units of g/mol.
    9·2 answers
  • What is mole concept? how to do its numericals​
    12·1 answer
  • What is the genetic material of all cells?
    6·1 answer
  • Calculate each of the following quantities:<br> (b) Amount (mol) of O atoms in 8.18 g of Ba(NO₃)₂
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!