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20

No. Of electrons = 19 No. Of protons = 19 No. Of neutrons = 20

Thanks❤❤❤ sir

Proton 19 elctron is same and neutron 20

Thanks sir aap na sab sahi bataya mara aak bhi namber nahi kata

20

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Nice ❤️❤️❤️

Jp sir y=√sin4x

Veri nice sir

Thanks Bhai

No.of. protons 19 No.of.electron 19 No.of.nutron 39-19=20

Thanks sir 🎉

thank you sir mera hi doubt tha

sir aap ye dono isi method se kar sakte ho? cu+hno3-->cu(no3)2+h20+no2 and hno3+h2s-->no+h20+s

Tomorrow is my exam therefore I see thi video 😊😊😮😅😅😅

Number of electrons -19 Number of protons-19 Number of Neutron-20

Superb guru ji 🙏🏻👍🏻👌🏻👍🏻❤❤❤❤❤❤❤❤❤❤❤

Hiiiiiiiiiii

8or 57

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❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤ good

Hi sir best❤❤ riplay

Number of protons 19. Number of electrons 19and number of neutrons 20

Spka retin kharab hai

Fast fast mat btao sir aaram se samjao

Thanku sir ❤

Op❤❤❤

Nice study's sir🎉

Thank you sir❤❤❤❤

बहुत शानदार ❤❤❤❤❤🎉🎉🎉🎉 सर।

M=4

Nice sir 🎉❤

Sir samg me nhi aata

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1) 8 2) 57 23:22

Nice sir ❤❤

Sir ❤❤❤❤❤❤

Yeh Galt hain sir❤

Good night sar

Number of Protons=19 Number of Electrons=19 Number of Neutron=30 Ok Sir 👍🏻👍🏻

sir q number 8 sin 45 is 1 by 2 hota h

Base voise distuiker raha hai😊😊😊😊😊😢😢😢

😲😳😳😅😊

7²+8+56²%57 😊

Very helpful

20

19,19,20

Bahut bahut dahnayabad sir dil se