CHEMISTRY SEE THE PIC AND ANSWER THE QUESTIONS
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54.Ans-option(4) no.electrons=18
no. of protons=20 in Ca+2
55.Ans-we have, f=c/lemda
=>lemda=3*10^8/2*10^14
=>lemda=1.5*10^-6--(a)
56.Ans-option(2) 17th group and 3rd period and the element is Cl.
Hope you got me
no. of protons=20 in Ca+2
55.Ans-we have, f=c/lemda
=>lemda=3*10^8/2*10^14
=>lemda=1.5*10^-6--(a)
56.Ans-option(2) 17th group and 3rd period and the element is Cl.
Hope you got me
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