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
nalin [4]
3 years ago
10

Potassium has an atomic number of 19. What is its electron configuration?

Biology
1 answer:
Ira Lisetskai [31]3 years ago
5 0

Answer:

shells 1, 2 and 3 are full and shell 4 has one electron

Explanation:

The distribution fo the electrons possessed by an atom in the shells surrounding it is termed as its electronic configuration.

According to the rules of writing the electronic configuration:

1. The first shell can be occupied by a maximum of two electrons.

2. the subsequent shells can be occupied by a maximum of 8 electrons.

3. the subsequent shells are filled only once the lower shells have been filled.

Based on these rules, the electronic configuration of potassium should be 2, 8, 8, 1. (2+8+8+1 = 19).

Thus, we can see that the first three shells are filled, and the last one has one electron left. 

You might be interested in
You are given two true-breeding groups of gerbils. The gerbils in the first group have black fur and curly tails; the gerbils in
Alexxx [7]

Answer:

3 black gebrils have straight tails

Explanation:

Given -

First group of true breeding gebrils have black fur and curly tails

Second group of true breeding gebrils have yellow fur and straight tails

After the F1 generation, all the offspring would have black fur and curly tail

This means black fur is dominant over yellow fur and curly tail is dominant over straight tails

Let "Black fur" be represented by "B" and "yellow fur" be represented by "b"

Let curly tail be represented by "C" and straight tail be represented by "c"

Then parents genotype for F1 generation would be "BBCC" and "bbcc"

and genotype of first generation offspring would be "BbCc"

BbCc

BC         Bc         bC        bc

BC BBCC BBCc BbCC BbCc

Bc BBCc BBcc BbCc Bbcc

bC BbCC BbCc bbCC bbCc

bc BbCc Bbcc bbCc bbcc

Black Curly – BBCC, BBCc, BbCC, BbCc, BBCc, BbCc, BbCC, BbCc, Bbcc,  

Yellow curly- bbCC, bbCc, bbCc

Black straight – BBcc, Bbcc, Bbcc

Yellow straight- bbcc

3 black gebrils have straight tails

6 0
3 years ago
Plz help will be marked BRAINLIEST
Ivenika [448]

Answer:

Cranial capacity increased the most from 2 million years ago to the present.

Explanation:

The rate of change is greatest between 2 million years ago and the present.

4 0
3 years ago
Read 2 more answers
The process in which two cells from different parents unite to produce the first cell of a new organism is called
Afina-wow [57]
D. Sexual reproduction.
6 0
3 years ago
In light-dependent reactions, the oxygen leaves the plants through the ________. *
drek231 [11]

Answer:

The Stomata

Explanation:

It transpires water & creates a vacuum to draw more water up the stem

3 0
3 years ago
Read 2 more answers
An impulsive risk is not based on emotion. <br> a. True <br> b. False
ikadub [295]
The answer is b. False
6 0
3 years ago
Read 2 more answers
Other questions:
  • In a normal-sighted individual, the ________ will focus images perfectly on a small indentation in the back of the eye known as
    6·1 answer
  • What conditions cause the contractile vacuole to fill with water?
    9·2 answers
  • Identify structures found in fungi. Check all that apply. produce spores contain pseudopods contain hyphae contain a fruiting bo
    7·2 answers
  • _____ can be prescribed to therapeutically lower cholesterol levels.
    6·1 answer
  • What is the relationship between cytoplasm and the nucleus of a cell?
    13·1 answer
  • In normal cells, glucose is broken down aerobically and fed into the citric acid cycle to produce, among other things, lots of A
    15·1 answer
  • Telophase is a stage of a cellular process that begins after the chromosomes have moved to opposite poles of the cell. During wh
    5·2 answers
  • PLZZ HELPP THIS IS OVERDUE!!!
    13·1 answer
  • Which organisms are multicellular, eukaryotes, and autotrophs?
    10·2 answers
  • I need help! on my last question
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!