Thực hiện chuỗi phản ứng sau (ghi rõ điều kiện, nếu Bài 1. Na

NaOH

→ NaAlO₂

có):

Al(OH)3

Bài 2. ALO,

AICI; → AI(NO3)3 →Al₂O₁ → NaAlO₂

Bài 3. FeyOa

Fe

→FeCl₂

→ Fe(OH)₂

→ Fe(OH)₁

Bãi 4. Cu(NOs) mà

Cu(OH)2 CuO

→ Cu

→ Cu(NO3)2

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

a corroding iron, if that's one of your choices

може ли да зареждате повече информация, моля