![subject](/tpl/images/cats/himiya.png)
Zinc has the chemical symbol zn and the atomic number 30. how many protons, neutrons, and electrons does an atom of zinc-69 have? a. 30 protons, 39, neutrons, 39 neutrons b. 39 protons, 30 neutrons, 30 neutrons c. 39 protons, 30 neutrons, 39 electrons d. 30 protons, 39, neutrons, 30 electrons
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:30, cadenhuggins2
Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?
Answers: 1
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:00, cheyennemitchel238
Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *
Answers: 2
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 21:30, starl0rd211
Describe at least two advantages and two disadvantages of using hydropower as a source of energy.
Answers: 2
You know the right answer?
Zinc has the chemical symbol zn and the atomic number 30. how many protons, neutrons, and electrons...
Questions in other subjects:
![Konu](/tpl/images/cats/en.png)
English, 14.11.2021 21:00
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 14.11.2021 21:00
![Konu](/tpl/images/cats/User.png)
![Konu](/tpl/images/cats/nemec.png)
German, 14.11.2021 21:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 14.11.2021 21:00