Question

34. A rectangular container measuring 40 centimeters by
20 centimeters by 30 centimeters is =-filled with water.
Water from a tap flows into the container at a rate of
7 liters per minute. Another tap drains water out of the
container at a rate of 2 liters per minute. How long will
3
8
it take to fill up the container completely?
1
30
20cr
40 cm​

Answer 1

Answer:

Atomic number of silicon is 14. The electronic configuration of the element is-K=2, L=8,m=4. According to the electronic configuration the valency is +4 or -4 because silicon can either gain 4 electrons or lose 4 electrons because it is a noble gas. Hence valency of silicon is 4.