Answer:
So, H2O means two atoms of hydrogen mixed with one atom of oxygen. All pure water is the same, two parts hydrogen to one part oxygen. ... Water cannot be separated by any physical means.
Explanation:
Logic and my notes from chem....
1) Find a good studying spot.
2) Stay Away From Your Phone or any other things that distract you.
3) Take a break after about 1-1 hour 30 minutes- break should be about 10 minutes.
4) make sure notes are complete for what you are revising for.
5) watch videos/ use class notes/ your own notes/ revision guides.
6) test yourself by answering exam style questions or by flash cards.
Answer:
You can model a substance doing a Lewis structure
And also you can model it doing a bond-line structure.
The last row going across
Answer:
He has two protons
Li electron has one electron in its outermost orbital.
Number of neutrons of nitrogen = seven neutrons
The second shell of boron: 3 electrons.
Explanation:
An atom is composed of electrons, protons and neutrons. The number of neutrons is determined by subtraction of the atomic number from the mass number.
The electronic configuration is already known for each of atoms in these questions according to standard tables.
