Question

(a) What are isobars? Give an example.

(b) Write the electronic configuration of chlorine atom. (Atomic number of chlorine=17)

(c) How many electrons and neutrons are present in an element X with mass number

39 and atomic number 19?​

Answer 1

Answer:

a) Isobars are atoms (nuclides) of different chemical elements that have the same number of nucleons. Correspondingly, isobars differ in atomic number (or number of protons) but have the same mass number. An example of a series of isobars would be 40S, 40Cl, 40Ar, 40K, and 40Ca.

b) Chlorine has the atomic number 17. - It belongs to group 17 in the periodic table. - The electronic configuration of chlorine is 1s22s22p63s23p5

c) #19 - Potassium - K.

Explanation:

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Answer 2

Answer:

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