Selenium is Atominc number: 34
It has 6 Valence electrons
Therefore you take 6 from 34: 28 core electrons
Selenium is a solid at room temperature and pressure, making it a solid state of matter.
Selenium was discovered by Jöns Jacob Berzelius, a Swedish chemist, in 1817. He isolated selenium from a residue left after sulfuric acid production.
Yes, selenium is a brittle material. It is a non-metal element with a crystalline structure, making it prone to breaking when subjected to stress or pressure.
No, selenium and selenate are not the same. Selenium is a chemical element with atomic number 34, while selenate is the anionic form of selenium usually found in compounds like sodium selenate. Selenate is a common form of selenium used in supplements and as a source of selenium in the environment.
either i didn't notice it for a long time, but Perrigo brand selenium sulfide 2.5 lotion which I've got smells like dog piles or body odor. i was wondering what that stink was until i finally smelled my pillow, rubbed my hands in my hair, PHEW!!!!
The valence electron configuration of selenium is 4s2 4p4, meaning it has 6 valence electrons.
Consuming too much selenium can lead to selenosis, causing symptoms like hair loss, fatigue, and gastrointestinal issues. In extreme cases, it can lead to more serious conditions like kidney failure and heart problems. It's important to stay within the recommended daily intake levels to avoid these risks.
The cost of selenium can vary depending on the form and brand. Generally, selenium supplements can range from $5 to $20 for a month's supply. It's best to check with different retailers or online stores for the most current prices.
Selenium melts 221.14 C on the ITS-90 Scale. Reference: Page 230 Guinness Book of Answers 9th Edition. Selenium melts at 221.18 C on the ITS-68 Scale. Reference Page 219 Guinness Book of Answers 8th Edition. T - T90 is approximately +0.011 K at this temperature according to the BIPM. T90 - T68 is approximately -0.040 K at this temperature according to Page 1-18 of the 74th Edition of the CRC Handbook of Chemistry and Physics. Page 4-122 of this Handbook gives 221 C for the melting point of Selenium. Newer editions of the CRC Handbook of Chemistry and Physics give 220.5 and 220.8 C. But these values are probably a little too low due to small amounts of impurities. The thermodynamic temperature of the melting point of selenium is 221.16 C plus or minus 0.02 C. or 494.31 K plus or minus 0.02 K. This is probably the most accurate value known for the melting point of selenium. This is for ultrapure selenium.
Yes, selenium is a nonmetal element that belongs to the group of chalcogens in the periodic table. It is not a metal.
Iodine is a nonmetal with a high electronegativity, Xenon is a noble gas with a complete outer shell of electrons making it stable, and Selenium is a metalloid with properties intermediate between metals and nonmetals. Their positions in the periodic table indicate their atomic structure and properties such as reactivity, electronegativity, and metallic behavior.
Vitamin E and selenium play important roles in supporting reproductive health in animals. Vitamin E is an antioxidant that helps protect reproductive tissues from oxidative damage, while selenium is essential for the formation and function of sperm and oocytes. Both nutrients are crucial for hormonal balance and overall reproductive success, including in preventing anestrus and promoting conception.
A selenium diode is a type of semiconductor device that allows current to flow in one direction. When forward biased, the selenium diode conducts electricity by allowing electrons to flow through it. When reverse biased, the selenium diode blocks the flow of current by creating a depletion region, similar to other diode types.
Selenium (Se) has an atomic number of 34
which means in a balance atom Se will have 34 protons and 34 electrons
then Se has a mass of 79 so to get the neutrons we minus the protons from the mass and we get 45
final answer:
Neutrons: 45
Protons:34
Electrons: 34
A rectifier on a motorcycle converts alternating current (AC) generated by the alternator into direct current (DC) to charge the battery and power the electrical system. This ensures a steady supply of power to the motorcycle's electrical components.
The hybridization of selenium in selenium tetrafluoride is sp3d. This is because selenium has 6 valence electrons, and to form 5 electron pairs with the 4 fluorine atoms, it requires 5 orbitals, leading to sp3d hybridization.
The top 10 everyday foods containing selenium are:
Neutral selenium has 6 valence electrons.
Selenium has 6 electrons in its outermost shell.
Selenium was discovered in 1817 in Sweden by Swedish chemist Jöns Jacob Berzelius.