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Standard XII

Chemistry

Lewis Dot Structure

The number of...

Question

The number of electron dots in Lewis structure indicates:

Number of valence electrons in an atom

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Number of protons in the nucleus of the atom

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Total number of electrons in an atom

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Total number of electrons and protons in an atom

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Solution

The correct option is A Number of valence electrons in an atom
The number of electron dots in Lewis structure indicates number of outermost electrons, i.e. valence electrons in an atom.

Hence, option $A$ is correct.

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Similar questions

The nucleus of an atom has 5 protons and 6 neutrons. What would be the (a) atomic number, (b) mass number, (c) the number of electrons, and (d) the number of valence electrons, per atom of this element?

Multiple Choice Questions

(a) The outermost shell of an atom is known as

(i) valency

(ii) valence electrons

(iii) nucleus

(iv) valence shell

(b) The number of valence electrons present in magnesium is

(i) two

(ii) three

(iii) four

(iv) five

(i) proton

(ii) neutron

(iii) electron

(iv) nucleon

(d) If the atomic number of an atom is 17 and mass number is 35 then number of neutrons will be

(i) 35

(ii) 17

(iii) 18

(iv) 52

(e) The number of electrons in an atom is equal to the number of

(i) protons in a neutral atom

(ii) neutrons in a neutral atom

(iii) nucleons in a neutral atom

(iv) none of the above

(f) The sum of number of protons and number of neutrons present in the nucleus of an atom is called its

(i) mass number

(ii) atomic number

(iii) number of electrons

(iv) all of the above

Q. In an uncharged atom, the number of protons is always the number of electrons.

Q. How many electrons, protons and neutrons are there in a nucleus of atomic number

11

and mass number

24

?
(i) number of electron

=

________.
(ii) number of protons

=

________.
(iii) number of neutrons

=

_______.

Q. Which of the following statement is always correct?

(a) an atom has equal number of electrons and protons

(b) an atom has equal number of electrons and neutrons

(d) an atom has equal number of electrons, protons and neutrons

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The number of electron dots in Lewis structure indicates:

The correct option is A Number of valence electrons in an atomThe number of electron dots in Lewis structure indicates number of outermost electrons, i.e. valence electrons in an atom.Hence, option A is correct.

The correct option is A Number of valence electrons in an atom
The number of electron dots in Lewis structure indicates number of outermost electrons, i.e. valence electrons in an atom.

Hence, option $A$ is correct.