Please solve Q33 Isotopes have the same number of protons but a different number

Question

Please solve Q33

Isotopes have the same number of protons but a different number of neutrons. the same total number of protons and neutrons. the same atomic mass. the same number of protons but different numbers of electrons. the same number of neutrons but a different number of protons. Which of the following statements about electron spin and the spin quantum number, ms, is NOT true? The spin quantum number can only have one of two values, + and - The electron creates a magnetic field because it is a charged particle moving through space The idea of electron spin was introduced to explain pairs of lines in atomic emission spectra Electrons in the same orbital can have the same spin The spin of en electron is quantized: Green light in the visible portion of the electromagnetic radiation spectrum has wavelength around 550 nm. Express this wavelength in meters using exponential notation. If the following arithmetic operations are carried out, how many signified figures should be reported in the answer? (0.523)(1.2161 - 0.99) + (2.648/0.87)(84 - 81.98) Oxygen is best described as a

Explanation / Answer

550 nm = 550 * 10-9 m

              = 5.5 * 102 * 10-9 m

              = 5.5 * 10 (2 - 7) m

              = 5.5 * 10-7 m

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