Khối 8
Science 8
Chemistry
Unit 7. Elements and compounds
The periodic table
Write the correct answer:
Radium is a
element
Đáp án
Radium is a
element
Giải thích
The correct answer
radioactive
1/1
Complete the sentence.
Moving from the bottom of the Periodic table to the top, the electronegativity of the elements
Đáp án
Moving from the bottom of the Periodic table to the top, the electronegativity of the elements
Giải thích
The correct answer
increases
1/1