Chemistry, asked by namannimade7972, 1 year ago

the total no. of electron in 4.2gm of N3- ion is

2.1NA

4.2NA

3NA

3.2NA

where,NA is the avogadro no.

Answers

Answered by bubra

3

n=no of electrons ÷N.A. but n is not given so n=mass in gram ÷molar mass
so your formula becomes no of electrons =m÷M ×N.A.

Previous Question

Next Question

Similar questions

English, 7 months ago

my muffin has been eaten. change into passive voice...

Math, 7 months ago

A sewing machine is available rupees 3000 Altis down payment of rupees 450 and two equal half yearly installment in the compound interest is 4% and only then what would be the amount of each installment...

English, 7 months ago

1. you should think twice before you speak a)what should you do before you speak? b)when should you think? c)how often should you think before you speak? d)how should you think before you speak?

Science, 1 year ago

Mention 20 Situations in our daily life where force is applied, write its cause and effect.

English, 1 year ago

You are the student editor of your school magazine .Draft a notice to be put up on the school notice board inviting student to make contribution in the shape of articles,jokes,poems etc . Also give the last date for the submission of same...

English, 1 year ago

Write the missing words...

Math, 1 year ago

Which number when multiplied by 5 gives products having 5 at the units place?

Math, 1 year ago

find the circumference of the circular region having area 5544 square meter...