What are the chemical properties of halogens? What is the group number for halogens? What do halogens and alkali metals have in common? What do halogens like to react with? What do halogens react to form? How are halogens and noble gases different? Which halogens are gases at STP?
An element belongs to the 3rd period and Group IIIA (13) of the periodic table.State: (a) the number of valence electrons, (b) the valency, (c) if it is a metal or non-metal ? (d) the name of the element. Q.A non metal in group 17 (VIIA) OF the periodic table, which is...
unique sensing performances, room-temperature working conditions, and tremendous application prospects, etc. Herein, we summarize recent advantages in graphene preparation, sensor construction, and sensing properties of various graphene-based gas/vapor sensors, such as NH3, NO2...
in particular the invention of the photonic crystal fiber (PCF). From optical frequency metrology to biophotonic imaging—its unique spectral properties have revolutionized dozens of applications, many of which are described in this book. However...