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The second ionization energy of Mg is ___ than its first ionization energy, and is ___ than the second ionization energy of Na .A.higher, higherB.lower, higherC.higher, lowerD.lower, lower的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuat
Which of the following elements would have the largest third ionization energy: K, Ca, Ga? Which element has the higher first ionization energy: Mg or Ca? Explain. Which of the following has the greatest ionization energy? a. Na+ b. Ne c. ...
The second ionization energies of phenol and the isomeric dihydroxybenzenes as well as their methyl ethers are determined by means of charge-stripping mass spectrometry. Compared to the parent molecule benzene, introduction of a hydroxy substituent lowers the second ionization energy by ca. 0.6 eV,...
What is the Group 3A element with the largest first ionization energy? How does the first ionization energy of the following pairs of elements compare? Which is higher? a. Se and Br b. Cl and I c. Ca and As d. Sr and Rb Which element has...
From the optical measurements of the second-negative-band system with an electron-beam excitation apparatus and with a discharge tube, the apparent cross sections for ionization-excitation to 14 vibrational levels of O2+ (A2Πu,v’) are determined. These apparent cross sections are compared with ...
The main drawback of these solutions is the high energy consumption during the enzymatic hydrolysis of cellulose, which usually lasts for about 48–72 h at ca. 50 °C. The solution to this problem may be the combination of enzymatic hydrolysis and alcoholic fermentation in the SSF (simultaneous...
calibration curve, the drug loading capacity of APNA was ca. 5.3%, suggesting that each pBODO-PEG-VR molecule contained ~3.3 equivalents of R848 pro-drug. Photothermal property of APNA was evaluated and compared with APNC. Upon continuous NIR-II (1064 nm) photoirradiation, both APNA and...
The energy required to remove an electron from the valence shell of the atom of an element is called the ionization energy of the element. The energies for the removal of the successive electrons are called the successive ionization energies like the first, sec...
1. Why is the ionization energy of helium greater than that of the other elements? Although fluorine is the most electronegative element, silicon tetrafluoride (SiF_4) does not have-a dipole moment. Explain. What is a covalent bond? What type of substances form covalent bonds?