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
Dmitry_Shevchenko [17]
3 years ago
10

Which element's total number of electrons is equal to the number of core

Chemistry
1 answer:
horsena [70]3 years ago
5 0

Answer:

Neon (Ne)

Explanation:

The atomic number of Chlorine is seventeen and its number of valance electrons are seven, so number of core electrons will be ten.

Valance electrons;

These are the electrons which are present in put most valance shells and take part in bonding.

Core electrons:

These are the electrons present in inner to the valance shell and closer to the nucleus. These electrons do not take part in bonding.

Electronic configuration:

Cl₁₇ = 1s² 2s² 2p⁶ 3s² 3p⁵

Core electrons = 1s² 2s² 2p⁶ = 10

Valance electrons = 3s² 3p⁵ = 7

The number of core electrons are ten and atomic number of neon is also ten. So, the number of core electrons of chlorine will be equal to the total number of electrons of neon.

You might be interested in
A student is doing online research. The student's teacher said that some
adoni [48]
Websites that end in .com or .org should be avoided.
3 0
3 years ago
One calcium atom for every two iodine atoms chemical formula
borishaifa [10]
Is it multiple choice or do you just answer
4 0
3 years ago
Americans combined drive about 4.0 x 109 kilometers a day and get an average of 20 miles per gallon of gasoline. For each kilogr
Nimfa-mama [501]

Answer:

303,882.84649 kg\times 3=9.12\times 10^5 kg of carbon dioxide gas.

Explanation:

Average distance covered by Americans in a day= 4.0\times 10^9 km

1 day = 24 × 60 min = 1,440 min

Average distance covered by Americans in a minute= \frac{4.0\times 10^9 km}{1,440}=2,777,777.78 km

Average mileage of the car = 20 miles/gal = 32.18 km/gal

1 mile = 1.609 km

20 miles = 20 × 1.609 km = 32.18 km

Volume of gasoline used in minute = \frac{2,777,777.78 km}{32.18 km/gal}

V=86,320.00 gal

V=86,320.00\times 3.7854 L

(1 L = 1000 mL)

V=86,320.00\times 3.7854 \times 1000 mL=326,755,748.91 mL

Mass of 86,320.00 gallons of gasoline = m

Density of the gasoline = d = 0.93 g/cm^3=0.93 g/mL

1 mL= 1 cm^3

m=d\times V=0.93 g/mL\times 326,755,748.91 mL

m=303,882,846.49 g=303,882.84649 kg

1 kilogram of gasoline gives 3 kg of carbon dioxde gas .

Then 303,882.84649 kg of gasoline will give :

303,882.84649 kg\times 3=9.12\times 10^5 kg of carbon dioxide gas.

8 0
3 years ago
What is the volume of 0.120 g of C2H2F4<br> vapor at 0.970 atm and 22.4°C?<br> Answer in units of L.
ludmilkaskok [199]

Answer:

V= 0.031L

Explanation:

P= 0.97atm, V= ?, n= 0.12/98 =0.00122mol, R= 0.082, T= 22.4+273= 295.4

Applying

PV=nRT

0.970×V = 0.00122×0.082×295.4

Simplify the above equation

V= 0.031L

6 0
3 years ago
Completely reacting 150.0 g of a substance with oxygen releases 395.1 J of energy. How much energy would be released if 450.0 g
MrMuchimi
To solve this problem we just need to use the rule of three:
150g..................395.1J
450g................xJ

x = 450*395.1/150 = 1185,3J

450.0 g of the substance completely reacted with oxygen will produce 1.1853 kJ(<span>kiloJoule</span>)
4 0
3 years ago
Read 2 more answers
Other questions:
  • What are the relative ion concentrations in an acid solution?
    12·1 answer
  • A battery is connected at its positive end by a wire to the head of an iron nail. The wire then coils aground the nail to its ti
    9·2 answers
  • What element is located in group 2, period 2?
    5·1 answer
  • The world’s supply of freshwater is increasing.
    13·2 answers
  • At a certain temperature, the vapor pressure of pure benzene (C6H6) is 0.930 atm. A solution was prepared by dissolving 10.0 g o
    11·1 answer
  • What volume (in mLmL) of a 0.175 MHNO3MHNO3 solution is required to completely react with 44.2 mLmL of a 0.108 MNa2CO3MNa2CO3 so
    5·1 answer
  • Which types of chemical reactions are<br> considered opposites of one another?
    8·2 answers
  • What is the activation energy of this reaction?<br><br> 50 kJ<br> 100 kJ<br> 150 kJ<br> 200 kJ
    9·2 answers
  • The united stated chemical industry produces more sulfuric acid, in terms of mass, than any other chemical. What is the mass of
    5·2 answers
  • Data that is collected that is mostly numbers?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!