if you would like to help me i have.flourinephosphoruscalciumnitrogenironargonpotassiumheliummagnesiumsulfurlithiumzinccarboniodineoxygenbariumaluminumhydrogenxenonand copperany help please
I am really not sureYou should do a Google search on the subject.
No but knit sweaters are always bad for site
Yes, acrylic yarn is a man made fiber, like nylon or polyesterIt's cheap to make and work with, Natural yarn or cloth costs way more cause you actually have to get them from sheep, rabbits or growing cotton, and there's a high cost and expence of feeding, land issuses, shearing the animal, cleaning and getting the raw product ready for commercial useif you can, use the natural fibers, I find them warmer, and you won't get those static shocks in the winter timeAnd in time when the sweater or whatever is worn out, It will degrade into the enviroment
Looking at the upfront environmental costs of acrylic vs natural yarn, acrylic is much worseIt takes a lot of chemicals to produce and the process can be pollutingIf you look at the life cycle costs, which are everything from the creation of acrylic until it is disposed of, acrylic is a lot better than natural fibersIf the natural fibers come from non-organic sources they use a lot of chemicals to fertilize and protect the cotton plants or to feed and maintain wool producersOrganic fibers don't have these problems, but they require much more land to get the same amount of productionClothes made from natural fibers also have long thick strands that require a lot of energy to dry and they wrinkle requiring more energy to ironAcrylic has short water repellent fibers that require little drying time and no or very little ironingAcrylic clothing is also much more durable and will last several times longer than natural fibersTo give you an example, an organic cotton item will require about a third of energy to produce as an acrylic item, but it will require ten times the amount of energy to dry and dewrinkle and an acrylic item will last ten years or more while organic cotton items have a life expectancy of about 2 years.
Look at the group : Group 1 (Li - Fr) 1 valence electron Group 2 (Be - Ra) 2 valence electrons Group 13 (B - Tl) 3 valence electrons Group 14 (C - Pb) 4 valence electrons Group 15 (N - Bi) 5 valence electrons Group 16 (O - Po) 6 valence electrons Group 17 (F - At) 7 valence electrons Group 18 (He - Rn) 8 valence electronsIn transition metals Groups 3 - 12 it is a little bit more difficultFor early transition metals, Groups 3 and 4 you can say that the group number also is the number of valence electrons, so Sc, [Ar]3d^1 4s^2 will have three valence electrons, Sc2+ and Sc3+ do exist, Sc2+ is [Ar]3d1 and Sc3+ is [Ar]For middle to late transition metals, the s electrons are the ones considered valence electronsSo Zn [Ar]3d^10 4s^2, only the 4s^2 are valence, Zn2+ is [Ar]3d10Cu, since it has an anomolous electron configuration, [Ar]3d^104s^1, we can have Cu+ [Ar]3^10 and Cu2+ [Ar]3d^9, given that the highest charge cation is +2, I will say copper has 2 valence electron.
