1) What is the element with an atomic number of 17? a) Boron b) Chlorine c) Fluorine d) Phosphorus 2) Group 2 Elements are also known as a) Alkali Metals b) Transition Metals c) Alkaline Earth Metals d) Carbon Groups 3) What is the Symbol of the element mercury? a) M b) Mr c) Hg d) H 4) Group 8 elements are also known as a) Noble gases b) Halogens c) Chalcogens d) Carbon Group 5) What is the outermost electrons? a) excited electrons b) outside electrons c) valence shell d) valence electrons

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?