Which statement is correct about the modern periodic table?

Question

Which statement is correct about the modern periodic table? (आधुनिक आवर्त सारणी के संदर्भ में कौन सा कथन ठीक है?)

Think Extraordinary · Accepted Answer

Correct Answer: Option D. All the above.. Explanation: All the statements are correct: Moseley showed atomic number equals nuclear protons, the table is structured around electron configurations, and group members have identical valence electrons.

Answer

Option A: Number of protons determines the atomic number of the elements.

Answer

Option B: It is based on the electronic configuration of elements.

Answer

Option C: Elements present in same group have the same number of electrons in the outermost shell.

Periodic Classification of Elements

Which statement is correct about the modern periodic table?