What is the valency of the element with atomic number 36 and mass number 84 ? View Solution Element with maximum atomic number is View Solution Exams IIT JEE NEET UP Board Bihar Board CBSE Free Textbook Solutions KC Sinha Solutions for Maths ...
The chemical element with atomic number 20 is calcium. What is the abbreviation for c
an element is a substance ,all of ___ atoms have the same atomic number为什么选whose ?. 答案 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...
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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) ...
with the same number and electrons but different number of neutrons. (a)(iii)Percentage =100%-4.30-83.80-2.40 9.5% ← protons (a)(iv) 50 51 52 53 54 55 56 (a)(v) The average of thenass of all the isotopes. (b)(i)Group l: 1 ; 2; 3 Group VIl: 2, 3, 4 (b)(ii)...
Oganessian YT et al (2010) Synthesis of a new element with atomic number Z=117. Phys Rev Lett 104(14):142502.https://doi.org/10.1103/PhysRevLett.104.142502 ArticleCASPubMedGoogle Scholar Orton JW (2009) Semiconductors and the information revolution: magic crystals that made IT happen. Academ...
M. (2003). Name and symbol of the elements with atomic number 10 (IUPAC Recommendations 2003), Pure Appl. Chem.; Vol. 75, pp. 1613-1615.Name and symbol of the element with atomic number 111 (IUPAC Recommendations 2004). Pure and Applied Chemistry . 2004...
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...
The chemical element with atomic number 11 is sodium. What is the abbreviation for so