﻿ The total number of neutrons in dipositive zinc ion with mass number 70 is : Kaysons Education

# The Total Number Of Neutrons In dipositive zinc Ion With Mass Number 70 Is

#### Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

#### Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

#### National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

#### Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

#### Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

## Question

### Solution

Correct option is

40

Z  for Zn = 30

No.of neutrons = A – Z

= 70 – 30

= 40

#### SIMILAR QUESTIONS

Q1

The neutron separation energy is defined to be the energy required to remove a neutron from a nucleus. Obtain the neutron separation energy of the nucleus of Given : mass of  atom = 40.962278 u, mass of  atom = 39.962591 u, mass of neutron = 1.008665 u and .

Q2

The nucleus  decays by -emission. Write down the decay equation and determine the maximum kinetic energy of the emitted electron. The atomic masses of  are 22.994466 u and 22.989770 u respectively.

Q3

When a deuteron  of mass 2.0141 u and negligible kinetic energy is absorbed by a lithium  nucleus of mass 6.0155 u, the compound nucleus disintegrates spontaneously into two alpha particles, each of mass 4.0026 u. Calculate the energy in joule carried by each alpha particle.

Q4

If the half lives of a radioactive element for α and β decay are 4 yrs and 12 yrs respectively, the ratio of their activities after six yrs will be

Q5

Half life of a radioactive sulistance A is 4 days. The probability that a nucleus will dacay in two half lives is

Q6

The half life of  The time taken for the radioactivity of a sample of  to dacay to 1/6 th  of its initial value is:

Q7

The half life of 131I is 8 days. Give a sample of 131I at time t = o, we can assert that

Q8

The mass of one mole of electrons is

Q9

The increasing order for  the values of e/m is

Q10

A radioactive nucleus is leing produed at a constant rate  per second. Its decay constant is λ. If No. are the number of nuclei at time t = 0, then  themanimum no, of nuclei