![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 05:00
1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:40
In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 16:00
Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:00
All of the following are homogeneous mixtures except a) sugar dissolved in water. b) orange juice. c) coffee with cream. d) household vinegar. e) apple juice
Answers: 1
You know the right answer?
What is moment and its calculations...
Questions
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 07:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 07:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 13.07.2019 07:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 13.07.2019 07:00
![question](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 07:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 07:00
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 07:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 07:00