SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1, 7
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10, 7
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2, 8, 7
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None of the above
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Detailed explanation-1: -The atomic number of Chlorine(Cl) is 17 and the electronic configuration is; 2, 8, 7 with seven electrons in the valence shell.
Detailed explanation-2: -The neutral atom chlorine (Z=17), for instance has 17 electrons. Therefore, its ground state electronic configuration can be written as 1s22s22p63s23p5. The chloride ion (Cl-), on the other hand, has an additional electron for a total of 18 electrons.
Detailed explanation-3: -The element here is Chlorine having an atomic number equal to 17.
Detailed explanation-4: –Chlorine has the atomic number 17.-It belongs to group 17 in the periodic table.-The electronic configuration of chlorine is 1s22s22p63s23p5.
Detailed explanation-5: –So, the number of electrons present in an atom = 2+8+7 = 17.-Therefore the atomic number of the element is equal to 17.-The element having atomic number 17 is Chlorine.