Question

help please I will brainlist

Answer 1

1-An ion is an atom or molecule that has a non-zero net electrical charge. A cation is a positively-charged ion, while an anion is negatively charged. ex- Na+ , O²+,etc.
2- coefficient of hydrogen molecule will be 3.
N2+ 3 H2 --> 2NH3
3- LIQUID
4-NaCl+ AgNO3-->AgCl + NaNO3
5- C-12 is used a standard for atomic mass scale.

there might be subscript or superscript mistakes , but hope u will get it.

Answer 2

1) charged particles of an atom is called ion.
eg. Na (sodium metal ) looses one electron to gain + charge.
NA+ is an ion not atom.

2) N2 + 3 H2 =2 NH3

3) liquid

4)Nacl + AgNo3 = Agcl + NaNo3

silver chloride will be ppt

5) Carbon 12 and atomic no is 6