PPT-The s-block elements include hydrogen (H), helium (He), lithium (Li), beryllium (Be),

Ca rubidium Rb strontium Sr cesium Cs barium Ba francium Fr and radium Ra The periodic table shows exactly where these elements are within the sblock SBlock Elements. 00794 He Helium 4003 Li Lithium 6941 Be Beryllium 9012182 Boron 10811 Carbon 120107 Nitrogen 1400674 Oxygen 159994 Fluorine 189984032 10 Ne Neon 201797 11 Na Sodium 22989770 12 Mg Magnesium 243050 13 Al Aluminum 26981538 14 Si Silicon 280855 15 Pho By Christian . paredez. H. ydrogen. Hydrogen is the lightest . element. Hydrogen as water (H2O) is absolutely essential to life and it is present in all organic . compounds.. Hydrogen is the lightest . By: Josh, Shea, and Brennan. What is an Atmosphere?. An atmosphere is the gasses that surround a planet.. Mercury’s Atmosphere. Mercury almost has no atmosphere.. It contains molecular oxygen, sodium, hydrogen, helium, potassium, and water vapor.. What is . electronegativity. ?. The ability of an element to attract bonding electrons to itself. What does that mean?. What is . electronegativity. ?. The ability of an element to attract bonding electrons to itself. By:. Luis Martinez. #1 Hydrogen. Hydrogen is the lightest element. . It . is by far the most abundant element in the universe and makes up about . 90. % of the universe by weight. . Hydrogen . as water (H2O) is absolutely essential to life and it is present in all organic compounds. Hydrogen is the lightest gas. Fluorine is . added to toothpaste to prevent tooth . decay.. Sodium combines . with chlorine to make table . salt.. Chlorine is used in bleach and other chemicals to kill germs in swimming pools.. Neon gas is used . Alkaline . earth metals. Made By- . Manas. . Mahajan. The group 2 elements of the periodic table are known as the alkaline earth metals. The alkaline earth metals contain: . What are alkaline earth metals?. By: Stephanie Halbleib. Goal. To . impart . critical information . about lithium to a target audience of first year nursing students. . . Objectives. At . the end of presentation participants will be able . What is Helium?. The atomic number of helium is 2, meaning each atom of helium has two protons.. Helium has the lowest melting point and boiling point of the elements, so it only exists as a gas except under extreme conditions.. How do solar systems form?. B. Stellar Nurseries . C. A. How did the solar system form?. Astro. Comics Presents…. Long ago…. Nebula. Hmm…I am just moving around randomly.. Before Planets. A nebula is a cloud of dust and gas in space.. Alkali Metals Electrostructure and reactivity Physical properties Summary activities Reactions Uses Contents H Rn Xe Kr Ar Ne Ra Ac Rf Db Sg Bh Hs Mt Ds Rg ? ? ? ? ? ? ? Ba La Hf Ta W Re Os Ir Pt Dr. . Nouf. H. Alotaibi. P-block Elements- V A elements. General trend. Electron configurations ns. 2. np. 3. (n is the period number). The s orbital is completely filled and p orbital is half filled which makes them stable.. Dr. . Ghufran. Mohammed Hussein. Non Essential . Trace Elements . Non Essential trace elements . are . fluoride. , . lead. , . aluminum. , . gold. , . mercury. , . lithium and . silver. The lack of any of these elements has not been shown to interrupt the life cycle or have a defined biochemical function in humans; thus they are generally considered nonessential. . Dr. . Nouf. H. . Alotaibi. Group 17 elements, fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At), belong to halogen family. . Electron configurations ns. 2. np. 5. (n is the period number)..