![subject](/tpl/images/cats/biologiya.png)
Potassium has an atomic number of 19. what is its electron configuration?
shells 1 and 2 are full, and shell 3 has nine electrons
shells 1, 2 and 3 are full and shell 4 has three electrons
shells 1, 2 and 3 are full and shell 4 has one electron
shells 1, 2 and 3 are full and no other electrons are present
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 13:30
Suppose a scientist measures the amount of dna per cell of a particular diploid species at various stages of meiosis. she finds that the meiotic cells contain 3.7 pg , 7.3 pg , or 14.6 pg of dna. match each stage of the cell cycle to the corresponding amount of dna contained within a cell at that stage.
Answers: 3
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 17:30
What is the sequence of amino acids corresponds with the rna strand ucg ggg cac
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 02:00
What would happen if the krill were removed from the food web
Answers: 2
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 03:00
Match with o for organic and i for inorganic for each compound
Answers: 2
You know the right answer?
Potassium has an atomic number of 19. what is its electron configuration?
shells 1 and 2 are...
shells 1 and 2 are...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/fizika.png)
Physics, 30.09.2019 08:30
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.09.2019 08:30
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 30.09.2019 08:30
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 30.09.2019 08:30