Question

Out of three metals P, Q and R, P is less reactive than Q and R is more
reactive than P and Q both. Suggest an activity to arrange P, Q and R in
order of their decreasing reactivity.​

Answer 1

Answer:

p<q<r

Explanation:

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Answer 2

solution...

given...

1)Out of three metals P, Q and R, P is less reactive than Q and R is more

reactive than P and Q both

2)an activity to arrange P, Q and R in

order of their decreasing reactivity.

here we can...

Taking...... metal P, metal Q and metal R. we know, when salt solution of a given metal is displaced by another metal then, reactivity of that metal is higher than metal present in salt. for example , salt of metal A + metal B → salt of metal B + metal A

then, reactivity of B > reactivity of A.

here, a/c to question,

P is less reactive than Q

so, Q > P .....(1)

it can be written as salt of metal P + metal Q → salt of metal Q + metal P

again, R is more reactive than P and Q both.

so, R > P and R > Q .......(2)

it can be written as

salt of metal P + metal R → salt of metal R + metal P

and salt of metal Q + metal R → salt of metal R + metal Q

from equations (1) and (2),

R > Q > P

hence, reactivity order is R > Q > P

i hope it helpfull to you...