Question

2. The number of protons, neutrons and electrons in three particles (X, Y and Z) are
given below:
Particle Number of
Protons Neutrons Electrons
X 19 21 19
Y 19 21 17
Z 19 20 19
Which one of the following statements is correct about the nature of the particles?
(i) X and Y are atoms of two different elements
(ii) X and Z are atoms of two different elements
(iii) Y is an atom and Z is an ion
(iv) X is an atom and Y is an ion

Answer 1

Answer:

(iv) is correct

Explanation:

(i)and (ii) are incorrect

Because all of them belong to same element as it has equal no of proton

(iii) is incorrect

because they have equal no of electrons but neutrons are unequal so , they both are isotopes

HOPE YOU GOT YOUR ANSWER IF SO MARK ME BRAINLIEST.

Answer 2

Answer:

(iv)

Explanation:

(i): X and Y are atoms of two different elements.

In any atom, number of protons and electrons are equal.

But in Y, protons are 19, whereas electrons are 17.

Thus we can say Y is not an atom.

Hence,

(i) is not correct, as Y is not an atom.

(ii): X and Z are atoms of two different elements.

In any atom, number of protons and electrons are equal.

e- of X = p+ of X → 19 = 19

e- of Y = p+ of X → 19 = 19

Hence both X and Y are atom.

And, since number of protons is same in both, both atoms are of same elements( not of different ).

And as result,

(ii) is not correct.

(iii): Y is an atom and Z is an ion

In Y, protons are 19, whereas electrons are 17.

Thus we can say Y is not an atom.

As a result.

(iii) is not correct.

(iv): X is an atom and Y is an ion.

e- of X = p+ of X → 19 = 19, it means X is an atom

e- of Y ≠ p+ of Y → 17 ≠ 19, it means Y is not an atom, but an ion.

Hence,

(iv) is correct.