What does Eu,Yb mean chemically

Element symbol: eu

Chinese name: Europium.

Product name: europium

Atomic number: 63

Atomic Weight: Peripheral Electron Configuration: 4F7

6S2 Extranuclear Electron Configuration: 2,8,18,25,8,2

Common valences: +2, +3

Density: melting point: 822

Boiling Point: 1527

Period: 6

Number of families: iiib

Atomic Radius: Ionic Radius:

Covalent radius: isotope and radioactivity: eu-151

eu-153

Found by: Eug e Demar Y

Place of discovery: France.

Origin of the name: named for the

continent of europe.

Element description: soft, silvery-white metal

monazite sand, which is a mixture of phosphates of calcium, thorium, cerium, and

most other rare earths.

Element use: used with yttrium oxide to make red phosphors

for color televisions.

Element symbol: yb

English name: ytterbium Chinese name: ytterbium.

Relative atomic mass: 173 Common valency: +2, +3 Electronegativity:

Peripheral electronic configuration: 4f14 6s2

Extranuclear electron configuration: 2,8,18,32,8,2

Isotopes and radiation: YB-168 YB-169 [ YB-170

yb-171 yb-172 yb-173 *yb-174 yb-175[ yb-176

Electron affinity and energy: 0 kj·mol-1

First ionization energy: 306 kJ·mol-1 Second ionization energy: 1175 kj·mol-1 Third ionization energy: 0 kj·mol-1

Elemental density: g cm3 Elemental melting point: Elemental boiling point:

Atomic Radius: Angstroms Ionic Radius: Angstroms Covalent Radius: Angstroms.

Element symbol: eu, Chinese name: europium, atomic number: 63, atomic weight.

Element symbol: yb, Chinese name: ytterbium, relative atomic mass: 173

The numerator is the measured concentration of the EU, and the denominator is the calculated value at the EU position obtained by linear interpolation based on the content of the elements on the side of the EU from your wave.

Livestock and poultry growth and body metabolism, in addition to the need for common calcium, phosphorus, sodium, potassium and other mineral elements, there are many elements are also indispensable, but the demand for these elements is very small, and the content in the animal body only accounts for less than 1/10,000 of body weight, so these elements are called trace elements. At present, 14 trace elements are known to be necessary for the human body, and these 14 trace elements are iron, fluorine, selenium, zinc, copper, molybdenum, cobalt, chromium, manganese, iodine, nickel, tin, silicon, and vanadium. The trace elements involved in the growth of livestock and poultry are copper, cobalt, iodine, zinc, selenium, fluorine, manganese, etc.

Trace elements are important components of many enzyme systems in the animal body, and some vitamins and hormones also contain trace elements, so trace elements play a very important role in the growth and metabolism process of animals, and once deficient, it will cause diseases. Excessive intake of trace elements can cause poisoning to livestock and poultry. Because the trace elements contained in water, soil and plants have certain differences in various places, the deficiency of trace elements is often regional, such as in the northeast, northwest and north China of many places are selenium deficiency areas, livestock and poultry selenium deficiency diseases are more.

The human body is composed of more than 40 kinds of elements, according to the different content of elements in the body, the elements in the body can be divided into two categories: one is a permanent version of the element, accounting for the weight of the body, including carbon, hydrogen, oxygen, phosphorus, sulfur, calcium, potassium, magnesium, sodium, chlorine and other 10 kinds, which constitute the body tissues and play the role of electrolytes in the body; The second is trace elements, accounting for about body weight, including iron, copper, zinc, chromium, cobalt, manganese, nickel, tin, silicon, selenium, molybdenum, iodine, fluorine, vanadium and other 14 kinds, although the content of these trace elements in the body is negligible, but can play an important physiological role. There are 8 kinds of essential trace elements for the human body, including iodine, zinc, selenium, copper, molybdenum, chromium, cobalt and iron.

Trace elements are elements whose content in the body is less than 1/10,000 of body weight.

Zinc. Iron. Calcium. Magnesium. Aluminium. Some elements such as selenium are less abundant.

The chemical formula of Europium chloride is EuCl3

The chlorine element shows -1 valence, and the valency of Europium is x, and according to the algebraic sum of the positive and negative valency in the compound is zero, we can get: x+(-1) 3=0, then x=+3 valence

In europium oxide, the europium element is +3 valence, and the oxygen element is -2 valence, and its chemical formula is Eu2O3, so C is selected

MN manganese, S sulfur, P phosphorus, Cr chromium, Ni nickel, Si silicon, Cu copper, RE for rare earth elements, Mo molybdenum, V vanadium, Al aluminum, Fe iron, W tungsten, Ti antimony, C carbon, B boron, N nitrogen, O oxygen, H hydrogen, RE for rare earth elements. FeO: (ferrous oxide), Fe2O (ferrous superoxide), CR2O3 (chromium oxide), Al2O3 (aluminum oxide), Fe3C (iron carbide).

All the previous elements are neutral, FeO: (ferrous oxide), Fe2O (superoxide), Al2O3 (aluminum oxide) is a basic oxide, and Cr2O3 (chromium trioxide) is an acidic oxide.

Alkaline oxides are alkaline oxides that can react with acids to produce corresponding salts and water. Acidic oxides are acids that can react with alkaline substances to produce salts and water.