Question 1 9 Complete the following table-Number of - neutrons-Number of protons-Number of celectrons-Name of the atomic specieslllhline 9-810-111hline16-32-Sulphurillhline -8248- 12 -111 hline-828-18-lllhline-1808180-lllhline lend array

[ Atomic number amp;Mass number amp;Number of neutrons amp;Number of protons amp;Number of electrons amp ...

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Standard IX

Chemistry

Atomic Number

Question 1 9 ...

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Question 19
Complete the following table.
$\begin{matrix} A t o m i c n u m b e r & M a s s n u m b e r & N u m b e r o f n e u t r o n s & N u m b e r o f p r o t o n s & N u m b e r o f e l e c t r o n s & N a m e o f t h e a t o m i c s p e c i e s 9 & - & 10 & - & - & - 16 & 32 & - & - & - & S u l p h u r - & 24 & - & 12 & - & - - & 2 & - & 1 & - & - - & 1 & 0 & 1 & 0 & - \end{matrix}$

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$\begin{matrix} A t o m i c n u m b e r & M a s s n u m b e r & N u m b e r o f n e u t r o n s & N u m b e r o f p r o t o n s & N u m b e r o f e l e c t r o n s & N a m e o f t h e a t o m i c s p e c i e s 9 & 19 & 10 & 9 & 9 & F l u o r i n e 16 & 32 & 16 & 16 & 16 & S u l p h u r 12 & 24 & 12 & 12 & 12 & M a g n e s i u m 1 & 2 & 1 & 1 & 1 & D e u t e r i u m 1 & 1 & 0 & 1 & 0 & P r o t i u m \end{matrix}$

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Question 19
Complete the following table.
$\begin{matrix} Atomic number & Mass number & Number of neutrons & Number of protons & Number of electrons & Name of the atomic species 9 & - & 10 & - & - & - 16 & 32 & - & - & - & Sulphur - & 24 & - & 12 & - & - - & 2 & - & 1 & - & - - & 1 & 0 & 1 & 0 & - \end{matrix}$

Complete the following table.

Atomic number	Mass number	Number of Neutrons	Number of protons	Number of electrons	Name of the Atomic species
9	−	10	−	−	−
16	32	−	−	−	Sulphur
−	24	−	12	−	−
−	2	−	1	−	−
−	1	0	1	0	−

Q. Complete the following table.

(i)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
9	-	10	-	-	-

(ii)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
16	32	-	-	-	Sulphur

(iii)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
16	32	-	-	-	Sulphur

(iv)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
-	2	-	1	-	-

(v)

Atomic number	Mass number	Number of neutrons	Number of protons	Number of electrons	Name of the Atomic species
-	1	0	1	1	-

Q. Question 5
Find the mean salary of 60 workers of a factory from the following table:

\begin{matrix} S a l a r y (i n R s) & N u m b e r o f w o r k e r s 3000 & 16 4000 & 12 5000 & 10 6000 & 8 7000 & 6 8000 & 4 9000 & 3 10000 & 1 T o t a l & 60 \end{matrix}

The table given below shows the number of protons and number of neutrons present in the nuclei of elements P and Q:

$\begin{matrix} N u c l e i & N u m b e r o f p r o t o n s & N u m b e r o f n e u t r o n s P & 1 & 1 Q & 1 & 2 \end{matrix}$

Calculate the mass number of P and Q. What is the relation between P and Q? Which element do they represent?

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Question 19 Complete the following table. Atomic numberMass numberNumber of neutronsNumber of protonsNumber of electronsName of the atomic species9−10−−−1632−−−Sulphur−24−12−−−2−1−−−1010−

Atomic numberMass numberNumber of neutronsNumber of protonsNumber of electronsName of the atomic species9191099Fluorine1632161616Sulphur1224121212Magnesium12111Deuterium11010Protium