34 An element has an atomic number of 4.Which statement about this element is correct? A A It forms ions by losing electrons. B It has four occupied electron shells in each of its atoms. C It is an unreactive gas at room temperature and pressure. D It is found in Group IV of the...
1 An atom of an element has an atomic number of 6 and a mass number of 12.(a)Using this information, complete the table to show the numbers of protons,neutrons and electrons in one atom of this element.(2)number of protons number of neutrons number of electrons(b)The Periodic Table ...
An element with atomic number 113 has been discovered.It will belong to which of the following block,group number,period and outershell electronic configurati
Write the symbol, atomic number, number of protons, number of neutrons, and number of electrons for Calcium, an element with mass number 42. An atom of element X contains 46 protons and 60 neutrons. Identify the element and write the symbol for...
What chemical element has atomic number 35? What does the atomic number of an element represent? What is the name of the element that has an atomic number of 8? What is the symbol for the element with atomic number 74? What is the atomic number of the element lawrencium? What is the...
解析 首先句子后面是作定语的,由主句可以知道,修饰的是主语element.因为atoms是原子的意思,对于元素来说,逻辑关系自然是“元素里的原子”,所以element和atoms具有从属关系,用whose(注意啦!在定语从句表示从属关系的时候,关系词whose不仅仅适用于人,也可以适用于物)...
Atoms with the same atomic number, but with different mass numbers, are known as isotopes. The term isotope is derived from Greek meaning the same place (in the Periodic Table; see Section 1.2.1.2) and is often (but erroneously) used interchangeably with the word nuclide. For example, the...
Also, by using strictly tin, an element that has a well-known high capacity for lithium, they were able to keep the capacity high. Instead of diluting the capacity with another metal such as antimony, using pure tin seems to have a better effect on the net capacity of the structure. ...
Nearly thirty years since its inception, the combined finite-discrete element method (FDEM) has made remarkable strides in becoming a mainstream analysis t
14a. This spreading of light pulses is known as modal dispersion and is 15 to 40 nsec/km for typical multimode step fibers. Consequently, such fibers tend to be used for transmission over short to medium distances. Modal dispersion can be reduced or eliminated by using a fiber with a core...