subject
Chemistry, 11.03.2021 21:30 Lizethh1

Alejandra analyzed a Periodic Table and discovered that the element, "K," has an atomic number of 19 and an atomic mass of 39.10. What is the specific number of protons, electrons, and neutrons in this atom? What is the name of the element? URGENT PLS

Answer choices:
a. 15 protons, 39 electrons, and 36 neutrons; Krypton
b. 19 protons, 19 electrons, and 20 neutrons; Krypton
c. 15 protons, 39 electrons, and 36 neutrons; Potassium
d. 19 protons, 19 electrons, and 20 neutrons; Potassium

ansver
Answers: 3

Another question on Chemistry

question
Chemistry, 22.06.2019 09:00
Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset
Answers: 1
question
Chemistry, 22.06.2019 21:50
What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car
Answers: 2
question
Chemistry, 22.06.2019 22:30
Is 343 in the sequence -5, -2, 1, 4, 7
Answers: 1
question
Chemistry, 22.06.2019 23:30
Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f
Answers: 2
You know the right answer?
Alejandra analyzed a Periodic Table and discovered that the element, "K," has an atomic number of 19...
Questions
question
Mathematics, 14.10.2019 11:50
question
Mathematics, 14.10.2019 11:50
question
History, 14.10.2019 11:50
Questions on the website: 13722367