The number of electrons in - 19 K 40 - -1 is-

The correct option is C 20 [ _ 19 K ^ 40 ] ^ 1 #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; # ...

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Ionisation Energy

The number of...

Question

The number of electrons in ${[_{19} K^{40}]}_{19}^{- 1}$ is:

18

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19

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22

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20

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Solution

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_{19} K^{40}

0.012

0.35

_{19} K^{40}

75 k g

_{19} K^{40}

1.3 \times 10^{9}

25, 16, 19, 48, 19, 20, 34, 15, 19, 20, 21, 24, 19, 16, 22, 16, 18, 20, 16, 19

The atomic number of an elelment X is 19. The number of electrons in its ion X' will be:
(a) 18 (b) 19 (c) 20 (d) 21

10, 19, 22, 16, 15, 18, 20, 18, 14, 18, 23

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