The least dense layer of the earth is the crust.
Answer:
I dont know the first blank but I know the second one is groups and the last one is periods.
Answer:
- C. it is a strong acid since the blue litmus paper turns red and the pH is 1.7
Explanation:
As per table gastric juice has pH of 1.7 which is the strong acid. If you remember, 0-7 range determines acids and litmus paper confirms that by turning red.
So correct choice is C.
Titanium is the haviest metal .
B the atomic number is 20 and then you subtract atomic mass to find the neutrons
