aInaccurate 不精确 [translate] a4、 例如:Each atom normally has the same number of electrons, revolving about the nucleus as it has protons(质子). 4、例如:因为它有氢核质子,每个原子通常有电子的同一数量,旋转关于(中坚力量)。 [translate] ...
Describe the structure of an atom.An atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines
ALEXANDER G. HIGGINS
Give the simple structure of the atom showing protons, electrons and neutrons.The elements of the periodic table are put in order of which of the following? a. electrons b. atomic mass c. atomic number d. neutronsThe atomic number represents the number of for ...
(elementname,symbol)isincorrectlymatchedorcontainsanerrorofsomekind?a.phosphorus,Pb.telurium,Tec.silver,Agd.aandbe.alloftheabove5.Whichwouldbeclassifiedasaheterogeneousmixture?a.hydrogengas,H2b.agaseousmixtureofnitrogen,O2andCO2c.95%ethylalcohol(C2H6Odissolvedinwater)d.bandce.noneoftheabove6.Whichhas...