Physics, 05.10.2021 17:50 alyahmarie00
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: 1
Physics, 22.06.2019 16:40
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Physics, 22.06.2019 20:00
Bahan yang digunakan mencegah terjadinya polarisasi pada batu baterai a.larutan h2so4b.mncl2 dan serbuk karbonc.pbso4d.nh4cl
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Physics, 22.06.2019 23:00
Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
Answers: 3
The electronic structure of the atoms of live elements, A,B, C,D and E, are shown below:
A 2,8,2 B...
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