Complete the table given below by identifying P, Q, R and S.

$\begin{matrix} E l e m e n t & S y m b o l & N o . o f & N o . o f & N o . o f P r o t o n s & N e u t r o n s & E l e c t r o n s S o d u m & _{11}^{23} N a & 11 & P & 11 C h l o r i n e & _{17}^{35} C l & Q & 18 & 17 U r a n i u m & R & 92 & 146 & 92 S & _{9}^{19} F & 9 & 10 & 9 \end{matrix}$

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Solution

P 12
Q 17
R
S Flourine

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Complete the following table relating to the atomic structure of some elements.

$\begin{matrix} Element & Atomic & Mass & Number of & Number of & Number of Symbol & Number & Number & Neutrons & Electrons & Protons L i & 3 & 6 C l & 17 & 20 N a & 12 & 11 A l & 27 & 13 S & 32 & 16 \end{matrix}$

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	................	................	................	................

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	−

Complete the entries in the third column of the table.

S. No.	Equation	Value of variable	Equation satisfied Yes/No
(a)	10y = 80	y = 10	-
(b)	10y = 80	y = 8	-
(c)	10y = 80	y = 5	-
(d)	4l = 20	l = 20	-
(e)	4l = 20	l = 80	-
(f)	4l = 20	l = 5	-
(g)	b + 5 = 9	b =5	-
(h)	b + 5 = 9	b = 9	-
(i)	b + 5 = 9	b = 4	-
(j)	h − 8 = 5	h = 13	-
(k)	h − 8 = 5	h = 8	-
(l)	h − 8 = 5	h = 0	-
(m)	p + 3 = 1	p = 3	-
(n)	p + 3 = 1	p = 1	-
(o)	p + 3 = 1	p = 0	-
(p)	p + 3 = 1	P = − 1	-
(q)	p + 3 = 1	P = − 2	-

\begin{matrix} Column-I & Column-II (a) & I C l & (p) & Linear (b) & B r F_{2}^{+} & (q) & Angular (c) & C l F_{4}^{-} & (r) & Tetrahedral (d) & A l C l_{4}^{-} & (s) & Square planar \end{matrix}

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Mass Number and Representation of Atom

Standard IX Chemistry

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Complete the table given below by identifying P, Q, R and S. ElementSymbolNo. ofNo. ofNo. ofProtonsNeutronsElectronsSodum 2311Na11P11Chlorine3517ClQ1817UraniumR9214692S 199F9109

P 12 Q 17 R S Flourine

P 12
Q 17
R
S Flourine