Sb arrangement of extranuclear electrons:1s⑵ 2s⑵2p⑹ 3s⑵3p⑹3d⑽ 4s⑵4p⑹4d⑽ 5s⑵5p⑶arrangement of valence(outer shell)electrons :5s25p3so the valence(outer shell)electrons either are 3 or 5. 相关推荐 1【题目】How many valence(outer shell)electrons are present in the atoms of the ...
The noble gases in group 18 each have eight valence electrons, with the exception of helium, which has only two valence electrons. 稀有气体位于第18组,价层有8个电子,其中氦仅有2个价层电子。 Figure 6.7 shows how the electron-dot structures you learned in Chapter 5 illustrate the connection bet...
A ferret is a playful ___ (小动物).4、听力题：My dad ___ the car every Sunday. (washes)5、填空题：The ___ is a small creature that likes to jump.6、How many months are there in a year?A. Ten B. Twelve C. Eleven D. Nine 答案：B 7、填空题：A tiny ___ (小鸟) chirps ...
The atomic structure of an atom consists of protons, neutrons, and ___ (electrons). 53.填空题: The ___ has a long tail and is very playful. 54.填空题: The ___ (青蛙) is an important part of the ecosystem. 55.选择题: How many strings does a violin have? A. 2 B. 4 C. 6...
1.What will the speakers do tonight?A.Visit Mary.B.Go out of town.C.Host a dinner.2.How does the woman go to work this week?A.By car.B.By bike.C.On foot.3.What time does Dave’s meeting start?A.At8：30.B.At9：00.C.At10：00.4.What is Helen going to do?A.Buy some ...
system?A. Titan B. Ganymede C. Callisto D. Europa 4、选择题：What do we call a person who makes shoes?A. Tailor B. Cobbler C. Weaver D. Blacksmith 5、What is a synonym for "fast"?A. Quick B. Slow C. Heavy D. Loud 6、How many hours are in a week?A. 168 B. 170 ...
Fluorine has a total of 9 electrons. a. Write out the electronic configuration and filling order for the 9 electrons. b. Write a set of quantum numbers for the third and the eighth electrons of the F atom. Write the electron arrangement for sodium (Na). ...
Electrons: Radar: Rahmanzadeh S, Pishvaee MS (2019). "Electron radar search algorithm: a novel developed meta-heuristic algorithm." Soft Computing, 24(11), 8443-8465. doi:10.1007/s00500-019-04410-8 Elephants: Elephant Clans: Jafari M, Salajegheh E, Salajegheh J (2021). "Elephant clan...
If K, L and M shells of an atom are completely filled, then how many electrons are present in the atom? View Solution Q3 K shell of 147N has 2 electrons. How many electrons are present in the L shell ? View Solution Q4 How many electrons are present in...
Determine how many unpaired electrons the Nb atom has in the ground state. How many unpaired electrons are there in a strong field iron(II) octahedral complex? (a) 0 (b) 1 (c) 2 (d) 4 (e) 6 D...