Skip to main content
MediumChemistryaverage atomic mass
+4 / -1

An element Z contains two naturally occurring isotopes 17Z35 and 17Z37. If the average atomic mass is 35.5 u, then the percentage of two isotopes 17Z35 and 17Z37 repectively is:

A
75%, 25%
B
25%, 75%
C
85%, 15%
D
15%, 85%
Previous

Given below are two statements: Assertion (A): 2 moles of N2 on reaction with 9

Next

One mole of which species has maximum number of electrons?

More from average atomic mass
Medium

Naturally occurring chlorine is 75 % Cl35 and 25 % Cl37. Calculate the average atomic mass of chlori

Medium

If isotopic distribution of ¹²C and ¹⁴C is 98.0% and 2.0%, respectively, then the number of ¹⁴C atom

Medium

Given below are two statements: Statement I: Average atomic mass of chlorine is fractional. Statemen

Medium

For the reaction, when 2 mole of ammonia and 3 mol of oxygen are allowed to react then;

Medium

The flasks of same volume are filled with , and respectively at same temperature and pressure. The w

Medium

Four gram of mixture of calcium carbonate and sand is treated with excess of HCl and 0.880 g of carb

Practice Chemistry Exams

Full-length mock tests with detailed analytics, rank, and percentile.

Browse Exams