Số lượng AO trong mỗi phân lớp s, p, d, f lần lượt là
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
- Phân lớp s có 1 orbital.
- Phân lớp p có 3 orbital.
- Phân lớp d có 5 orbital.
- Phân lớp f có 7 orbital.
Câu hỏi liên quan
Read the following advertisement and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 1 to 6.
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Hãy cho biết bảng số liệu nhiệt độ và lượng mưa trên thể hiện đặc trưng khí hậu của các tỉnh / thành phố nào sau đây?
Để thuận lợi trong việc tương tác với người nghe, người nói nên chọn vị trí đứng và di chuyển như thế nào? (Chọn hai đáp án)
Cơ quan nào có trách nhiệm bầu cử ra Uỷ ban nhân dân các cấp?
Trong không gian \(Oxyz\), cho hai điểm \(A(5;2;1), B (1;0;-1)\). Phương trình của mặt cầu đường kính \(AB\) là:
Với \(k,n\) là các số tự nhiên và \(1 \le k \le n\), công thức nào sau đây là đúng?
Đâu là các thành phần cơ bản của môi trường?
Tổng các giá trị m nguyên để phương trình sau \(\sin x \cos x-m(\sin x+\cos x)+1=0\) có nghiệm
Ở kì nào của động cơ Diesel 4 kì, xu páp nạp mở?
Miền Tây Trung Quốc hình thành các vùng hoang mạc và bán hoang mạc rộng lớn do đâu?
Câu thơ “Trơ cái hồng nhan với nước non” sử dụng biện pháp nghệ thuật gì?
Read the passage carefully. Choose an option (A, B, C or D) that best answers each question from 16 to 22.
1. Like many emergency responders, Nicholas Groom is used to stress at work. On the one hand, the stress can be helpful. “I find that when attending a serious incident, it helps me to maintain focus on the situation,” Nicholas Groom said. On the other hand, the work can be highly pressurized. “Too much stress can impair your ability to make decisions,” he adds. And Groom is not alone in his complicated relationship with stress.
2. Many people believe that there should be a balanced amount of stress. In other words, not too much stress so you’re not overwhelmed but not too little stress so you don’t feel unmotivated. After all, some anxiety is motivating; think of the adrenaline before a deadline or the excitement before a competition. Sports fans sometimes even talk about a “gene” in some athletes who seem to play best in the decisive final moments of a match. Furthermore, many psychologists claim that performance in many situations increases with stress up to a point. Of course, any stress can cause harm when it’s prolonged. To take just one example, a long-term high heart rate is linked to cardiovascular diseases. And additional stressors, such as financial pressures or psychiatric issues, clearly affect how beneficially someone can respond to stress.
3. So is there a way to harness stress to your advantage while being mindful of its detrimental long-term effects? One key factor is to avoid, whenever possible, the point when stress leads to mental and physical collapse. Crystal Wernicke, 30, has always used stress as a motivator. But juggling between parenting, a full-time job, a voluntary role and financial troubles at the same time became too much and eventually led to a two-month period of illness. Another factor is the presence of control. For those who feel powerless over their situation, stress is unlikely to be beneficial. But with some autonomy over stressful tasks, we are better able to convert that pressure into higher performance.
4. When it comes to stress and how it affects your performance, it’s helpful to recognize the variations in personality, type of stress and task that affect the level of pressure you are under, as well as understanding tools you can use to control and harness that stress. Ultimately, it’s not helpful to take a one-sided view, either demonizing or glorifying stress. As James C Quick, a management professor at the University of Texas, sums up: “Stress can be the kiss of death as well as the spice of life.”
Which of the following is NOT TRUE, according to paragraph 2?
Chọn ý đúng: Trình bày dự án trước lớp đáp ứng yêu cầu nào?
Read the following passage about food addiction and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.
Few people would disagree that one of the world's most popular dishes is pizza. Twenty-two-year-old Zack certainly wouldn't. He would eat a variety of pizza-based items, including homemade pizza, precooked microwave pizza, and even pizza leftovers from the night before. He was consuming 800kg of pizza a year. As a child, Zack had eaten a wide variety of food. But he became addicted to pizza when he started secondary school. American school meals have often been criticised for the large amount of fast food present on the menu, and pizza is the star dish. Zack even spent all his pocket money on slices of pizza.
Naturally, Zack's family worried about his high-calorie, low-vitamin diet. So did Zack. In an attempt to break his addiction, Zack agreed to appear on a TV programme called Freaky Eaters. Its aim was to encourage food addicts to beat their addictions with the help of a psychologist and nutritionist. It wasn't easy. He had to eat a fish dish, while his brother sat in front of him enjoying... a pizza! However, Zack met the challenge and has never eaten pizza again.
Seventeen-year-old Stacy Irvine's friends visit her and discover that she has been rewarded thousands of free toys from fast food restaurants as a regular customer. Stacy's mother often gave her two-year-old girl a portion of fried chicken in a McDonald's restaurant. [I] Since then, Stacy has refused to eat anything else except for pieces of fried chicken, and as a result, her diet has created serious health. She has been warned that if she doesn't change her diet, she will die. [II] Stacy once collapsed due to lack of vitamins and nutrients and needed to be hospitalised. [III] She insisted that Stacy adopt a healthier lifestyle. However, worryingly, Stacy's mother said that while Stacy was beginning to understand the seriousness of her situation, she couldn't eat anything else but chicken nuggets. [IV]
Twenty-year-old Hanna Little was keen on chips. The only thing that Hanna consumed for fifteen years was one plate of chips after another. Not surprisingly, a diet that contained few nutrients and an excess of fat and carbohydrates could only have negative consequences. And it did because not only did Hanna develop health problems, but she also had to leave her job after collapsing at work. At five, Hanna became addicted to chips and refused to eat fruits and vegetables despite her mother's efforts. Hanna says that she was terrified of tasting the flavour of different types of food and she would feel anxious just at the idea of doing it. Parties, picnics and barbecues with friends and family used to be a nightmare. Furthermore, Hanna was soon seen as 'odd' by her friends' parents.
It wasn't until the age of sixteen that Hanna realised she had Selective Eating Disorder (SED). Despite this new knowledge, no solution was found. It wasn't until she lost her job before she started eating normally. Hanna sought therapy from psychologist Felix Economakis, who used hypnosis, a treatment that none of the doctors that she had seen before had mentioned, to get her to eat fruit after one one-hour session, and since then she has been willing to eat anything.... including chips!
(Adapted from Friends Global)
Which of the following best paraphrases the underlined sentence in paragraph 4?
Một khí cầu có dung tích 328m3 được bơm căng khí Hydrogen. Khi bơm xong, lượng khí Hydrogen trong khí cầu có nhiệt độ 270C và áp suất 0,9atm. Dùng một máy bơm để bơm khí vào khinh khí cầu với công suất 750W. Nếu mỗi giây, máy bơm bơm được 2,5g khí vào khí cầu, thì lượng điện tiêu thụ của máy sử dụng của quá trình bơm là bao nhiêu kWh?
Cho \(\text{cos}\alpha =-\frac{2}{3}\) và \(\alpha \in \left( {{90}^{\circ }};{{180}^{\circ }} \right)\).
Biết khối lượng của các hạt proton, neutron và hạt nhân \(_{11}^{23}{\rm{Na}}\) lần lượt là \(1,0073{\rm{u}};1,0087{\rm{u}};\) và \(22,9838{\rm{u}}.\) Năng lượng liên kết của hạt nhân \(_{11}^{23}{\rm{Na}}\) là
Cho hình vẽ nguyên tử:
Kí hiệu nguyên tử nào sau đây là đúng?
Đâu không phải là nhận định nói về chức năng của thị trường?
Một loài sinh vật có bộ NST lưỡng bội 2n = 8. Số lượng NST trong một tế bào của loài này ở kì giữa của giảm phân II là gì?