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Konfigurasi elektron dan letak unsur 35 ​ X dalam sistem periodik adalah .... (Nomor atom Ar=18)

Konfigurasi elektron dan letak unsur dalam sistem periodik adalah .... (Nomor atom Ar=18)

  1. K o n f i g u r a s i space E l e k t r o n colon left square bracket A r right square bracket space 4 space s squared space 3 d to the power of 10 space end exponent  G o l o n g a n colon space I I space A  P e r i o d e colon 3

  2. K o n f i g u r a s i space E l e k t r o n colon space left square bracket A r right square bracket space 4 space s squared space 3 d to the power of 10 space end exponent 4 p cubed  G o l o n g a n colon space V space A  P e r i o d e colon space 3

  3. K o n f i g u r a s i space E l e k t r o n colon space left square bracket A r right square bracket space 4 space s squared space 3 d to the power of 10 space end exponent 4 p to the power of 5  G o l o n g a n colon space V I I space A  P e r i o d e colon space 4

  4. K o n f i g u r a s i space E l e k t r o n colon space left square bracket A r right square bracket space 4 space s to the power of 1 space 3 d to the power of 5  G o l o n g a n colon space V I space B  P e r i o d e colon space 4

  5. K o n f i g u r a s i space E l e k t r o n colon left square bracket A r right square bracket space 4 space s squared space 3 d to the power of 10 space end exponent 4 p to the power of 1  G o l o n g a n colon space I I I space B  P e r i o d e colon space 4

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A. Ratna

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

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Pembahasan

K o n f i g u r a s i space X presubscript 35 equals space 1 s squared space 2 s squared space 2 p to the power of 6 space 3 s squared space 3 p to the power of 6 space space 4 s squared space 3 d to the power of 10 space 4 p to the power of 5 comma space b i s a space d i r i n g k a s space left square bracket A r right square bracket space 4 s squared space 3 d to the power of 10 space 4 p to the power of 5 space  E l e k t r o n space v a l e n s i space colon space 4 s squared space 4 p to the power of 5 space equals space 7 comma space s e h i n g g a space g o l o n g a n space V I I A space  P e r i o d e space equals space k u l i t space t e r b e s a r space equals space 4

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Dalam sistem periodik unsur, unsur Y terletak pada golongan VA dan periode keempat. Jika jumlah neutron unsur tersebut adalah 42, konfigurasi elektron dan notasi atom untuk unsur Y yang tepat adalah ....

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