Join / Login

11th
Chemistry
Structure of Atom
$Atomic Number and Mass Number$

Atomic Number and Mass Number

Structure of Atom

Chemistry

Class 11

Overview

Study Materials

Atomic Number: Definition, Finding Atomic Number, Videos and Questions Mass Number: Meaning, Uses. Properties with Solved Examples Atomic Mass and Molecular Mass: Definition, Calculation, Videos, Example

Quick summary with Stories

Atomic Number and Mass Number

2 mins read

Revise with Concepts

Atomic Number and Mass Number-Advanced

ExampleDefinitionsFormulaes

If number of electrons in an atom is $8$ and number of protons is also $8$ , then:
(i) What is the atomic number of an atom?
(ii) What is the charge on the atom?
(iii) Why does moon have very cold and very hot temperature even though it is present at the same distance from the sun as the earth is?

View solution

Boron has 2 stable isotopes, $10 - B$ $(19$ %) and $11 - B$ ( $81$ %) the atomic mass that should appear for boron in the periodic table is:

View solution

The mass of an element $E$ found in $1.00 m o l e$ of each of four different compounds is $38.0 g$ , $57.0 g$ , $76.0 g$ and $114 g$ respectively .

What is possible atomic weight of $E$ ?

View solution

The atomic number of an element is $32$ and mass number $55$ . Calculate the number of neutrons?

View solution

A trend common to both group $I$ and $V I I$ elements in the periodic table as atomic number increase is

View solution

The chromium atom is represented as :

View solution

Give reason for the following:

The mass number of an atom is slightly less than the actual atomic mass.

View solution

Atomic number is ______________.

View solution

Magnesium hydroxide is the white milky substance in milk of magnesia. What mass of $M g (O H)_{2}$ is formed when $15 m l$ of $0.2 M - N a O H$ is combined with $12$ ml of $0.15 M - M g C l_{2} ?$

View solution

For an element, $A = 34$ and $N = 19$ , What is the atomic number of the element?

View solution

Atomic Number and Mass Number

Overview

Study Materials

Quick summary with Stories

Atomic Number and Mass Number

Revise with Concepts

Atomic Number and Mass Number-Advanced

Related questions

If number of electrons in an atom is $8$ and number of protons is also $8$ , then:
(i) What is the atomic number of an atom?
(ii) What is the charge on the atom?
(iii) Why does moon have very cold and very hot temperature even though it is present at the same distance from the sun as the earth is?

Boron has 2 stable isotopes, $10 - B$ $(19$ %) and $11 - B$ ( $81$ %) the atomic mass that should appear for boron in the periodic table is:

The mass of an element $E$ found in $1.00 m o l e$ of each of four different compounds is $38.0 g$ , $57.0 g$ , $76.0 g$ and $114 g$ respectively .

What is possible atomic weight of $E$ ?

The atomic number of an element is $32$ and mass number $55$ . Calculate the number of neutrons?

A trend common to both group $I$ and $V I I$ elements in the periodic table as atomic number increase is

The chromium atom is represented as :

Give reason for the following:

The mass number of an atom is slightly less than the actual atomic mass.

Atomic number is ______________.

Magnesium hydroxide is the white milky substance in milk of magnesia. What mass of $M g (O H)_{2}$ is formed when $15 m l$ of $0.2 M - N a O H$ is combined with $12$ ml of $0.15 M - M g C l_{2} ?$

For an element, $A = 34$ and $N = 19$ , What is the atomic number of the element?

More topics

Atomic Number and Mass Number

Overview

Study Materials

Quick summary with Stories

Atomic Number and Mass Number

Revise with Concepts

Atomic Number and Mass Number-Advanced

Related questions

If number of electrons in an atom is 8 and number of protons is also 8, then: (i) What is the atomic number of an atom? (ii) What is the charge on the atom? (iii) Why does moon have very cold and very hot temperature even though it is present at the same distance from the sun as the earth is?

Boron has 2 stable isotopes, 10−B(19%) and 11−B(81%) the atomic mass that should appear for boron in the periodic table is:

The mass of an element E found in 1.00 mole of each of four different compounds is 38.0 g, 57.0 g, 76.0 g and 114 g respectively . What is possible atomic weight of E?

The atomic number of an element is 32 and mass number 55. Calculate the number of neutrons?

A trend common to both group I and VII elements in the periodic table as atomic number increase is

The chromium atom is represented as :

Give reason for the following: The mass number of an atom is slightly less than the actual atomic mass.

Atomic number is ______________.

Magnesium hydroxide is the white milky substance in milk of magnesia. What mass of Mg(OH)2​ is formed when 15ml of 0.2M−NaOH is combined with 12 ml of 0.15M−MgCl2​?

For an element, A=34 and N=19, What is the atomic number of the element?

More topics

If number of electrons in an atom is $8$ and number of protons is also $8$ , then:
(i) What is the atomic number of an atom?
(ii) What is the charge on the atom?
(iii) Why does moon have very cold and very hot temperature even though it is present at the same distance from the sun as the earth is?

Boron has 2 stable isotopes, $10 - B$ $(19$ %) and $11 - B$ ( $81$ %) the atomic mass that should appear for boron in the periodic table is:

The mass of an element $E$ found in $1.00 m o l e$ of each of four different compounds is $38.0 g$ , $57.0 g$ , $76.0 g$ and $114 g$ respectively .

What is possible atomic weight of $E$ ?

The atomic number of an element is $32$ and mass number $55$ . Calculate the number of neutrons?

A trend common to both group $I$ and $V I I$ elements in the periodic table as atomic number increase is

Give reason for the following:

The mass number of an atom is slightly less than the actual atomic mass.

Magnesium hydroxide is the white milky substance in milk of magnesia. What mass of $M g (O H)_{2}$ is formed when $15 m l$ of $0.2 M - N a O H$ is combined with $12$ ml of $0.15 M - M g C l_{2} ?$

For an element, $A = 34$ and $N = 19$ , What is the atomic number of the element?