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
Black_prince [1.1K]
3 years ago
7

What is the electron configuration of an element with atomic number 20?

Chemistry
2 answers:
Vedmedyk [2.9K]3 years ago
8 0
[Ar]4s^2
hope it helps

blagie [28]3 years ago
4 0

Answer:

 What is the electron configuration of an element with atomic number 20?  1s2 2s2 2p6 3s2 3p6 4s2

Explanation:

You might be interested in
A hot toluene stream, which has mass flow rate of 8.0 kg/min, is cooled by cooling water in a cocurrent heat exchanger; its temp
Alex Ar [27]

Complete Question  

The complete question is shown on the first question

Answer:

a) The duty of the heat exchanger is given as 6.8658 KJ /sec

b) The temperature of the water leaving the exchanger is TOUT = 29.84 ⁰C

c) The log mean difference is given as TZ = 47.317 ⁰ C

d) the UA value is UA = 145.10

Explanation:

The explanation is uploaded on the first and second ,third and fourth image

3 0
3 years ago
For each of the following sublevels, give the n and l values and the number of orbitals: (a) 6g; (b) 4s; (c) 3d.
olya-2409 [2.1K]

Answer:

(a) 6g. Shell 6, n = 6. Subshell g, l = 4. Number of orbitals in sublevel = 9

(b) 4s. Shell 4, n = 4. Subshell s, l = 0. Number of orbitals in sublevel = 1

(c) 3d. Shell 3, n = 3. Subshell d, l = 2. Number of orbitals in sublevel = 5

Explanation:

The rules for electron quantum numbers are:

1. Shell number, 1 ≤ n, n = 1, 2, 3...

2. Subshell number, 0 ≤ l ≤ n − 1, orbital s - 0, p - 1, d - 2, f - 3

3. Orbital energy shift, -l ≤ ml ≤ l

4. Spin, either -1/2 or +1/2

So,

(a) 6g. Shell 6, n = 6. Subshell g, l = 4. Number of orbitals in sublevel = 2l+1 = 9

(b) 4s. Shell 4, n = 4. Subshell s, l = 0. Number of orbitals in sublevel = 2l+1 = 1

(c) 3d. Shell 3, n = 3. Subshell d, l = 2. Number of orbitals in sublevel = 2l+1 = 5

4 0
3 years ago
What happens to the ions when the drain is turned off? please help :] ❤️
kkurt [141]

Answer:

In a long channel MOSFET, the width of the pinch-off region is assumed small relative to the length of the channel. Thus, neither the length nor the voltage across the inversion layer change beyond the pinch-off, resulting in a drain current independent of drain bias. Consequently, the drain current saturates.

Explanation:

pls Mark my answer in brainlist and follow me

5 0
2 years ago
In the sentence "After conducting the science experiment,we recorded and analyzed the results," what does the word conducting me
gulaghasi [49]
Anything related to the word "performing/conducting"
4 0
3 years ago
Read 2 more answers
Use the choose reaction drop down menu to see other equations, and balance them. Check your answers and then write the balanced
d1i1m1o1n [39]
3 and then you do that yea
6 0
2 years ago
Other questions:
  • Three bags containing different number of wooden cubes are dropped from the same height. Which of the following statements is tr
    12·1 answer
  • A 44.6 mg sample of carbon reacts with sulfur to form 124 mg of the compound. part a what is the empirical formula of the carbon
    13·1 answer
  • Consider the reactions C2H4(g) + 2O2(g) → 2CO(g) + 2H2O(g) ∆H = −758 kJ mol−1 2C(s) + 2H2(g) → C2H4(g) ∆H = +52 kJ mol−1 H2(g) +
    15·1 answer
  • The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a famous experiment in 17
    14·1 answer
  • The mechanism for producing a concentrated urine involves all of the following except
    7·1 answer
  • Which elements can form acidic compounds? ​
    6·2 answers
  • If the same amount of energy in the form of heat is added to 8.9 g samples of each of the metals below, which metal will undergo
    13·1 answer
  • Answer the question briefly: How can atom collapse and why are atoms stable?
    7·1 answer
  • What is the sum of kinetic energy and potential energy?
    15·1 answer
  • Please answer grade 6th
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!