A) State the number of valence electrons for the element O?

B) An element with 5 protons, has how many electrons?

C) If an element has 4 electrons and an atomic mass of 9, what element is it?

D) Chlorine has two naturally occurring isotopes: Cl-35 and Cl-37. Which isotope is more abundant if the atomic mass of chlorine is 35.45?

Question

23 March, 17:26

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Answers (1)

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Peter · Answer 1

A) number of valence electrons is 6

B) number of protons is same as number of electrons

C) That elements is berilium

D) I think it is Cl-37 one