21st of March 2017

1. 1.8g of E2O3 contains 5.6 of ‘E’. How many moles of E does 16.8g of the element ‘E’ contain?

2. 2. The electronic configuration of an ion Z2- is 2,8 . If the number of neutrons present in the parent atom ‘Z’ is 11 then what is the nucleon number of Z’ ?

Sahil Kumar Sahoo - CBSE - Class X

Tuesday, March 21, 2017 at 17:50:PM


Solution to your first query is given below:

Tuesday, March 21, 2017 at 18:03:PM