Chemistry, 06.10.2021 17:50 ortizprecious5183
The electronic structure of the atoms of live elements, A,B, C,D and E, are shown below:
A 2,8,2 B 2,8,6 C 2,1 D 2,8 E 2,6
(a) which one of these elements is in group II of the periodic table? Give a reason for your answer.
(b) which two of these elements are in the same group in the periodic table?
(c) which one of these elements has the highest proton number?
(d) Element E is oxygen. An isotope of oxygen has eight neutrons.
(i) what do you understand by the term isotope?
(ii) state the nucleon number of this isotope of oxygen.
(e) Element C is Lithium is a metal. Describe three differences between the physical properties of lithium and oxygen 2 of 2
Answers: 3
Chemistry, 21.06.2019 18:30
What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?
Answers: 2
Chemistry, 22.06.2019 01:40
Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?
Answers: 1
Chemistry, 22.06.2019 18:10
Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
Chemistry, 23.06.2019 03:00
Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions
Answers: 1
The electronic structure of the atoms of live elements, A,B, C,D and E, are shown below:
A 2,8,2 B...
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
English, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Social Studies, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Physics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
English, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Mathematics, 13.09.2020 14:01
Biology, 13.09.2020 14:01