Two elements X and Y need to be arranged in Mendeleev's periodic table. X has 3 protons more than Y but their neutrons are equal in number. Which of the following is correct about X and Y?

X and Y should be placed together.

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Y will be placed after X.

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X and Y are isotopes.

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X will be placed after Y

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Solution

The correct option is D
X will be placed after Y

In Mendeleev's periodic table, elements are arranged according to increasing atomic mass. Now since neutrons and protons are responsible for the atomic mass of an atom, so X will be placed after Y.

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Similar questions

Two elements X and Y need to be arranged in Mendeleev's periodic table. X has 3 protons more than Y but their neutrons are equal in number. Which of the following is correct about X and Y?

Q. Statement I : An element with an atomic number of X and mass number of N has N - X neutrons.
Statement II : In periodic table, elements have more neutrons than protons.

Q. Which of the following element(s) in the modern periodic table resemble elements predicted by Mendeleev?

(More than one option is correct)

Q. Which of the following statement(s) about the Modern periodic table is/are incorrect?
(i) The elements in the Modern periodic table are arranged on the basis of their decreasing atomic number.
(ii) The elements in the Modern periodic table are arranged on the basis of their increasing atomic number
(iii) Isotopes are placed in an adjoining group(s) in the periodic table.

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Two elements X and Y need to be arranged in Mendeleev's periodic table. X has 3 protons more ​​​​​than Y but their neutrons are equal in number. Which of the following is correct about X and Y?

The correct option is D X will be placed after Y In Mendeleev's periodic table, elements are arranged according to increasing atomic mass. Now since neutrons and protons are responsible for the atomic mass of an atom, so X will be placed after Y.

Two elements X and Y need to be arranged in Mendeleev's periodic table. X has 3 protons more than Y but their neutrons are equal in number. Which of the following is correct about X and Y?

The correct option is D
X will be placed after Y

In Mendeleev's periodic table, elements are arranged according to increasing atomic mass. Now since neutrons and protons are responsible for the atomic mass of an atom, so X will be placed after Y.