Question

Find the values of a and d.
EXERCISE 1.1
Find the values of the letters in each of the following and give reasons for the steps involved
3.
1 A
2.
4 A
1.
X A
3 A
+ 2 5
+ 9 8
9 A
C B 3
B 2​

Answer 1

Answer:

Barium is a naturally occurring alkaline metalloid element with atomic symbol Ba, atomic number 56, and atomic weight 137 that is only found in combination with other elements, typically barite (barium sulfate) and witherite (barium carbonate), or chemicals.