Fill in the following blanks in respect of an atom of an element - - Number of protons Number of neutrons Mass number Atomic number Number of electrons Valency- 11 12 - - - - -

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Atomic Number

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Fill in the following blanks in respect of an atom of an element :

$\begin{matrix} Number of protons & Number of neutrons & Mass number & Atomic number & Number of electrons & Valency 11 & 12 & - - & - - & - - & - - \end{matrix}$

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Fill in the following blanks in respect of an atom of an element :

Number of protons	Number of neutrons	Mass number	Atomic number	Number of electron	Valency
11	12	.............	.............	.............	.............

Fill in the following blanks in respect of an atom of an element :

No. of protons	No. of neutron	Mass number	Atomic number	No. of electrons	Symbol
11	12	................	................	................	................

\begin{matrix} Covid 19 & Air/droplet, direct contact & Lungs AIDS & A & B \end{matrix}

The number of protons in one atom of an element X is 8. What will be the number of electrons in its ion $X^{2 -}$
(a) 8 (b) 9 (c) 10 (d) 11

∣ ∣ ∣ ∣ \begin{matrix} 10! & 11! & 12! 11! & 12! & 13! 12! & 13! & 14! \end{matrix} ∣ ∣ ∣ ∣ =

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