20. The atomic number of an element is 17. (a) What is its valency? (b)Whether it is a metal or non-metal? (c) Whether it is bigger or smaller in size than an element of atomic number 18? (d)What type of bonds it will form with elements of group 18? (e) How would its oxide behave with litmus solution?
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The element is Chlorine
(a) Its valency is 1
(b) It is a non-metal
(c) Argon has atomic no. 18. The size of chlorine is 99pm while argon is 190 pm.
(a) Its valency is 1
(b) It is a non-metal
(c) Argon has atomic no. 18. The size of chlorine is 99pm while argon is 190 pm.
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it is chlorine
it is non metal
it is bigger in size
its oxide will turn blue litumus red
it is non metal
it is bigger in size
its oxide will turn blue litumus red
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