Chemistry MCQs for NEET — Practice Questions with Answers

Fluorine (F) is the strongest oxidizing agent because it has the highest electronegativity of all elements, which means it has a very strong tendency to attract electrons towards itself. This makes it very effective in oxidizing other substances.

The neutron/proton ratio does not exhibit periodicity in the same way as the other properties. Ionization potential, bonding behavior, and electronegativity all show trends across periods and down groups in the periodic table, but the neutron/proton ratio does not follow a periodic pattern.

Lithium (Li) and Magnesium (Mg) have similar properties due to the diagonal relationship in the periodic table. This happens because the size by charge ratio (charge density) of Li and Mg is similar, leading to comparable chemical properties.

The given quantum numbers for option A correspond to an electron in a p-orbital (n=2, l=1). Elements with their last electron in a p-orbital in the second energy level are non-metals, like carbon (C) and nitrogen (N), which are found in the p-block of the periodic table.

The ionisation potential of nitrogen (N) is greater than that of oxygen (O) because nitrogen has a stable half-filled p-orbital (2p^3). This half-filled configuration gives it extra stability, making it harder to remove an electron compared to oxygen.

The chalcogen family (group 16 of the periodic table) includes elements like Oxygen, Sulfur, Selenium, Tellurium, and Polonium. The general electronic configuration for chalcogens is $ns^2 np^4$. Therefore, for an element with the electronic configuration $[Ar] 3d^{10} 4s^2 4p^4$, it fits this pattern, making it a member of the chalcogen family.