How science students use chemical elements to confess

OS, AT, NB, for the periodic table of chemical elements, respectively, osmium, astatine, niobium, homonym expression is I love you.

Osmium: The sixth period of the periodic table is an element of the platinum group metals. The element symbol is os, atomic number 76, relative atomic mass. It is a heavy platinum group metal and is the densest known metal.

Astatine: atomic number 85, is a very rare natural radioactive element, the chemical symbol is derived from the Greek word astator, the original meaning is "change".

Niobium: chemical symbol NB, atomic number 41, atomic weight, belongs to the periodic VB group. 1801 British CHatchett isolated an oxide of a new element from niobium.

The valency of the elements of the periodic table of chemical elements

1) Except for the first period, from left to right in the same period, the highest positive valence of elements in the second period increases from alkali metal +1 to nitrogen element +5, the highest positive valence of other periodic elements increases from alkali metal +1 to +7, and the negative valence of non-metallic elements increases from carbon group -4 to -1.

2) The highest positive and lowest negative values of elements in the same main family are the same.

The melting point of an elemental element in the periodic table of chemical elements.

1) With the increase of atomic number of elements in the same period, the melting point of the elemental element increases, and the melting point of the non-metallic element decreases. (The melting point of the subgroup reaches the highest in the VIB group and decreases sequentially).

2) From top to bottom, the melting point of the elemental metal element decreases, and the melting point of the non-metallic elemental increases.

The metallicity of the elements of the periodic table of chemical elements.

1) The metallicity of elements in the same period decreases from left to right, and the non-metallicity increases;

2) The metallicity of elements in the same main group increases from top to bottom, and the non-metallicity decreases.

You can go here to see, I just saw here that there is a lot of chemistry here, you can learn a lot, I learned from here, you can try it, I hope it can help you, oh, don't forget!

Good luck! oo~.

1. MG 10ZNSO4==MGSo4+ZN

Your magnesium stole my zinc.

HF+SIO2=H2SIF6+2H2O You are hydrofluoric acid and I am silicon dioxide. I would like to dissolve into your blood and bones, just as silica dissolves in hydrofluoric acid at room temperature, and that's it. The nature of silica is not active, it does not interact with halogens other than fluorine and hydrogen fluoride, hydrogen halide, sulfuric acid, nitric acid, perchloric acid (except for hot concentrated phosphoric acid).

3. cuso +ba(oh) =baso +cu(oh) I will love you to love, no matter how the world changes, we are all together.

4、h2+o2=h2o

I am a hydrogen ion, you are a hydroxide ion, and together we are the source of life H2O.

H O + MNO (catalyst) = 2H O + O:

Even if the world is shattered, my perseverance in you will never diminish.