Free s-Block and p-Block Elements MCQs with Answers
1,359 s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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1,359 questions · page 16 of 68
- A. IB
- B. IIB
- C. IIIA
- D. IA
Explanation: The coinage metals, such as copper (Cu), silver (Ag), and gold (Au), belong to group IB (or group 11) of the periodic table.
Correct answer: IB- A. Alkali metals
- B. Halogens
- C. Both a & b
- D. None of these
Explanation: Hydrogen (H) has properties that are similar to both the alkali metals and the halogens.
Correct answer: Both a & b- A. Zn (Zinc)
- B. Al (Aluminum)
- C. Cu (Copper)
- D. Ni (Nickel)
Explanation: Zinc (Zn) is known to react with acids such as hydrochlonc ace (mC) or su fune ace (11504) toproduce hydrogen gas (He).
Correct answer: Zn (Zinc)- A. Antoine Bequerel
- B. Dimitri Mendeleev
- C. Robert Boyle
- D. John Newlands
Explanation: Dimitri Mendeleev is considered the father of the periodic table. He developed the first modern periodic table in 1869, which organized…
Correct answer: Dimitri Mendeleev- A. With high charge density
- B. Distance between nucleus and outer most electron
- C. Size of the atom
- D. None of these
Explanation: Hydration energy is the energy released when an ion or molecule is surrounded by water molecules.
Correct answer: With high charge density- A. +1
- B. -1
- C. +2
- D. -2
Explanation: A hydrogen ion, also known as a proton, has a charge of +1. This is because a hydrogen atom has one proton in its nucleus and when it…
Correct answer: +1- A. To differentiate between normal and transition elements
- B. To differentiate between metals and non-metals
- C. To differentiate between d and f block elements
- D. None of these
Explanation: The divisions into groups A and B on the periodic table help to differentiate between the main group elements (also known as…
Correct answer: To differentiate between normal and transition elements- A. 26
- B. 24
- C. 32
- D. 36
Explanation: Each period in the periodic table corresponds to the number of electron shells (or energy levels) that elements in that period have.
Correct answer: 32- A. Complete
- B. Incomplete
- C. Called Long Period
- D. None of these
Explanation: The 7th period of the periodic table is currently incomplete, as new superheavy elements are still being discovered and added to the…
Correct answer: Incomplete- A. [Ne] 3s2 3p1
- B. [Ne] 3s2 3p3
- C. [Ne] 3s2 3p2
- D. [Ar] 3d10 4s2 4p³
Explanation: The configuration [Ne] 3s²3p³ represents an element with a half-filled p-subshell.
Correct answer: [Ne] 3s2 3p3- A. Fe > Sc > Rb >Br > Te > F > Ca
- B. Ca > Rb > Sc > Fe > Te > Br > F
- C. Rb > Ca > Sc > Fe > Br > Te > F
- D. Rb > Ca > Sc > Fe > Te > Br > F
Explanation: Electropositive character (metallic character) is highest for alkali metals (Rb) and decreases across the periodic table.The general trend…
Correct answer: Rb > Ca > Sc > Fe > Te > Br > F- A. (A) < (B) < (C)
- B. (C) < (B) < (A)
- C. (A) < (C) < (B)
- D. (B) < (A) < (C)
Explanation: In the third period, oxide character changes from ionic to amphoteric to covalent.
Correct answer: (A) < (B) < (C)- A. S²⁻ > Cl⁻ > K⁺ > Ca²⁺
- B. Ca²⁺ > K⁺ > Cl⁻ > S²
- C. Cl⁻ > S²⁻ > Ca²⁺ > K⁺
- D. K⁺ > Cl⁻ > Ca²⁺ > S²⁻
Explanation: For isoelectronic species (those with the same number of electrons), the size decreases as the nuclear charge (number of protons)…
Correct answer: S²⁻ > Cl⁻ > K⁺ > Ca²⁺- A. It is softer than other alkali metals
- B. It is least reactive
- C. It possesses higher melting and boiling points
- D. It forms chloride which is soluble in alcohol
Explanation: Lithium is actually harder than the other alkali metals (it can even scratch glass), while the others are very soft.
Correct answer: It is softer than other alkali metals- A. Gallium and Germanium
- B. Aluminium and Silicon
- C. Iron and Sulphur
- D. Proton and Silicon
Explanation: Dmitri Mendeleev predicted the existence and properties of several undiscovered elements.
Correct answer: Gallium and Germanium316. According to modern periodic law, variations in the properties of elements is related to their:
- A. Atomic weight
- B. Nuclear weight
- C. Atomic numbers
- D. Neutron-proton ratio
Explanation: The Modern Periodic Law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers.
Correct answer: Atomic numbers- A. d-block
- B. f-block
- C. s-block
- D. p-block
Explanation: The electronic configuration shown, [Ar] 3d⁵ 4s¹, is that of Chromium (Cr).
Correct answer: d-block- A. Fe
- B. K
- C. Ba
- D. N
Explanation: Representative elements (or main group elements) are those in the s-block and p-block of the periodic table.
Correct answer: Fe319. Which of the following represents the electronic configuration of the most electropositive element?
- A. [He] 2s1
- B. [Xe] 6s1
- C. [He] 2s2
- D. [Xe] 6s2
Explanation: Electropositivity is the tendency of an atom to lose electrons, and it increases down a group.
Correct answer: [Xe] 6s1- A. 1.36 Å,1.40Å, 1.71 Å
- B. 1.36 Å, 1.71Å, 1.40Å
- C. 1.71 Å, 1.40 Å, 1.36 Å
- D. 1.71Å, 1.36Å, 1.40Å
Explanation: N³⁻, O²⁻, and F⁻ are isoelectronic (all have 10 electrons). For isoelectronic species, the ionic radius decreases as the nuclear charge…
Correct answer: 1.71 Å, 1.40 Å, 1.36 Å