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4 tháng 10 2022

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4 tháng 10 2022

Magnesium ( 12 )

4 tháng 10 2022

-Nguyên tử nguyên tố Y có 3 lớp electron=> Y thuộc chu kì 3

-Lớp ngoài của nguyên tử Y cùng có `2` electron=> Y thuộc nhóm `IIA`

 

 

4 tháng 10 2022

cảm ơn bạn nhìu nha

:3

cứu chị em ôi! chết chị rồi có ia cứu tui ko:điền câu sau:phương trình quang hợp gồm H2O+CO2 nhờ ánh sáng cùng chất diệp lục tạo ra C6H12O6+O2 câu hỏi là v nếu H20+CO2 =>...
Đọc tiếp

cứu chị em ôi! chết chị rồi có ia cứu tui ko:
điền câu sau:
phương trình quang hợp gồm H2O+CO2 nhờ ánh sáng cùng chất diệp lục tạo ra C6H12O6+O2 câu hỏi là v nếu H20+CO2 => C6H12O6 
thì.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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em+ anh = bao nhiu:)))))

2
3 tháng 10 2022

trả lời ik:))))

3 tháng 10 2022

thì sao bạn ?