The electron configuration of a certain element is 1s² 2s² 2p⁴. Which of the following is correct about this element? A. It is a metal. B. It is a non-metal. C. It is a noble gas. D. It is a transition metal. 相关知识点: 试题来源: 解析 B。解析:该元素价电子数...
Which element is a row 4 noble gas? a. Ne b. Br c. Zr d. KrWhat is the first element in the periodic table?Which of the elements in the following periodic table are alkali metals?What is the lowest atomically-numbered inert gas element on the periodic table?Which element is...
What does the atomic number of an element tell you about the element? What is the name of the Ne element? What are the outputs of an adder circuit called? What is the hysteresis of the Schmitt trigger circuit? What is the function of fuses or circuit breakers in a circuit?
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The gas sensor has a sensor element (14), which is exposed to a sample gas element section (142). The gas sensor has a protective sleeve (22), which is made of gas permeable porous metal fiber composite and surrounds the element section. The fiber material of the metal fiber composite ...
The element 'X' with electronic configuration 2, 8, 6 (Z = 16) is sulphur. It is placed in group 16 of the modern periodic table. lnfact the element with configuration 2, 8, 8 is a noble gas Argon (Ar) and is present in group 18. Therefore, sulphur is pl
X is calcium oxide. It is an oxide of group 2 element, calcium and is used intensively in cement industry. Ca is also present in bones. Calcium oxide on treatment with water forms lime water which is a basic solution hence, it turns red litmus blue. un
Which is the ground state electron configuration for the Mn+3 ion? A)Ar4s2 3d2 B)Ar4s2 3d5 C)Ar4s0 3d4 D)Ar4s1 3d3 Ground State: Ground state refers to the natural energy level of electrons in the electron cloud of an atom. When ...
List four ions that are isoelectronic with the noble gas xenon and give the charge of each.What is the energy of the electron in the ground state of a Li++ ion?The period of an element with electron configuration 1s2 2s2 2p6 3s2: a. 3. b. 1....
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