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...
Name the noble gas which (A)is most abundant in atmosphere , (B)has least boiling point. Video SolutionStruggling With P Block Element...? Get Allen’s Free Flashcards Free ALLEN Flashcards Text SolutionVerified by Experts (A)Argon (B)Helium, Exists as mono-atomic molecules and are ...
Which element below has five valence electrons? a. Si b. Se c. S d. I e. Sb What is the period 6 element that forms a 4+ ion with a pseudo-noble gas configuration? Which element belongs to the s-block of the periodic table? (a) alkali metals (b...
Write down the formula of the noble gas species which are isostructural with (a) ICI(4)^(-) , (b)I Br(2)^(-) , ( c)BrO(3)^(-)
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. ...
What name is given to the elements with atomic numbers greater than 92? What property makes metal a good conductor and rubber a good insulator? Give the name of each element. (a) Cu (b) Bi (c) Ti List the noble gas elements.
When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is a relatively un...
A gas sensor element has a solid electrolyte of a conductivity, a target gas electrode on a surface of the solid electrolyte is formed, a reference gas electrode, on the other surface of the solid electrolyte is formed, a porous diffusion-resistant layer, by means of which the target gas,...
Which element has the ground-state electron configuration Kr5s^2 4d^{10} 5p^4? What is the ground state electron configuration for an atom of iron? What element has a ground state electron configuration of Kr5s24d105p2? What element has the ...
a月饼是中秋节不可或缺的元素。 The moon cake is the Midautumn Festival indispensable element.[translate] a关于面向全校的通知,我们要拟定时间和地点,画一幅海报贴在宣传栏,让全校的学生都能主动参与我们的晚会。以增加晚会的气氛,同时显现同学们主人翁的立场。你想的主意真的很好,我想老师们肯定会满意的。另...