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
Fofino [41]
3 years ago
10

Type in the correct values to correctly represent the valence electron configuration of magnesium: AsB A = B =

Chemistry
2 answers:
erik [133]3 years ago
7 0
<h2>Answer : The correct answer will be A =3 and B =2 as the electron configuration of Mg will be as [Ne] 3s^{2} where A is 3 and B is 2.</h2><h3>Explanation : </h3>

Magnesium has atomic number as 12. The complete electron configuration will be as 1s^{2}2s^{2}2p^{6}3s^{2}.

which can be abbreviated as[Ne] 3s^{2} as the electron configuration resembles to that of neon element.

In the outermost shell the electron in 3 s orbital is only 2. So, therefore 3 is the orbital of S and there are 2 electrons in it.

Alexxandr [17]3 years ago
5 0
The correct answer would be,
A= 3 
B=2
You might be interested in
Where are elements with similar chemical properties found on the periodic table?
LekaFEV [45]
All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
8 0
3 years ago
PLEASE HELP ME ASAP!!!!
VashaNatasha [74]

Answer:

16.   CsCl  =  Cs¹⁺ and Cl⁻¹

17.  CaF₂  =  Ca²⁺ and F⁻¹

18.   FeO  =  Fe²⁺ and O⁻²

19. Al₂O₃  =  Al³⁺ and O⁻²

4 0
2 years ago
A certain first-order reaction (a→products) has a rate constant of 9.60×10−3 s−1 at 45 ∘c. how many minutes does it take for the
Alexxandr [17]

The integrated rate law expression for a first order reaction is

ln\frac{[A_{0}]}{[A_{t}]}=kt

where

[A0]=100

[At]=6.25

[6.25% of 100 = 6.25]

k = 9.60X10⁻³s⁻¹

Putting values

ln\frac{100}{6.25}=9.6X10^{-3}t

taking log of 100/6.25

100/6.25 = 16

ln(16) = 2.7726

Time = 2.7726 / 0.0096 = 288.81  seconds

7 0
3 years ago
Read 2 more answers
A 45.0 g sample of a metal at 85.6 °C is placed in 150.0 g of water at 24.6 °C. The final temperature of the system is 28.3 °
earnstyle [38]

Answer:

904.014 j/kgk

Explanation:

Mass of metal = 45g

Temperature of metal = 85.6°

Mass of water = 150

Temperature of water = 24.6

Final temperature of system = 28.3

Heat lost by metal = Heat gained by water

m1 * c1 * dt = m2 * c2 * dt

Q = quantity of heat

Q = m*c*dt

dt = change in temperature

dt of water = 28.3 - 24.6 = 3.7

dt of metal = 85.6 - 28.3 = 57.3

Specific heat capacity of water, c = 4200

(45 * 10^-3) * c * 57.3 = (150 * 10^-3) * 4200 * 3.7

2.5785c1 = 2331

c1 = 2331 / 2.5785

= 904.01396

= 904.014 j/kgk

3 0
3 years ago
What is the function of the load in<br> an electric circuit?
mezya [45]

Answer:

The source side of the circuit includes all parts of the circuit between the positive side battery post and the load. The load is any device in the circuit that produces light, heat, sound or electrical movement when current is flowing. A load always has resistance and consumes voltage only when current is flowing.

Explanation:

plz Mark my answer in brainlist

and follow me plz

8 0
3 years ago
Read 2 more answers
Other questions:
  • How many atoms are in Cu2MgHO
    12·1 answer
  • The men\'s world record (as of 2007) for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate, how many seconds
    5·1 answer
  • Which of the following sets represents a pair of isotopes? (2 points) Question 6 options: 1) 35Cl and 37Cl 2) 40Ar and 40K 3) O2
    14·1 answer
  • Which is an element? ... air ...carbon dioxide ...hydrogen ...water Description
    13·2 answers
  • Plz help quick
    13·2 answers
  • Which of the following measurements is expressed to three significant figures?
    13·2 answers
  • Match the following names of glassware with what you would use them for.
    15·1 answer
  • If the volume of an irregular sound is determined by the water displacement technique, its volume will be equal to
    12·1 answer
  • Which of the following two conditions will favor a spontaneous reaction?
    13·1 answer
  • What is the density of a plastic ball that has a volume of 6cm) and a mass of 12g?<br> 50 cm3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!