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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- A. Lother Mayer
- B. Mendeleev
- C. Ramsay
- D. Mosley
Explanation: Group VIIIA elements, which are also called zero group elements, usually show zero oxidation state because there is no vacancy in their…
Correct answer: Mendeleev- A. Representative elements
- B. Transition elements
- C. Non-typical transition elements
- D. Coinage metal group
Explanation: 2B group are called non typical tramsition elements cause they have some property of transition and sone of p block
Correct answer: Non-typical transition elements- A. Be
- B. Mg
- C. Cd
- D. Cr
Explanation: As we move along the period the melting point increases and along the group it decreases so which is why Mg has lowest melting point as it…
Correct answer: Mg- A. N, O, F
- B. Si, P, S
- C. F, O, N
- D. S, Si, P
Explanation: Flourine has the highest electronegativity that is 4 because of small size they we have oxygen and then nitrogen has lowest…
Correct answer: F, O, N- A. Transition metals
- B. Halogen
- C. Alkali metals
- D. Noble gases
Explanation: Alkali metals are group 1A elements so they have one eletron in valence shell which they easily lose and form positive ion so hydrogen…
Correct answer: Alkali metals- A. NaCl
- B. AlCl3
- C. CCl4
- D. H2O
Explanation: AlCl3 is partially ionic so it act as bridge structure
Correct answer: AlCl3- A. P
- B. S
- C. Mn
- D. Cr
Explanation: Transition elements, which are shown in B subgroups of the periodic table, also show the oxidation states equal to their group number as…
Correct answer: Mn- A. IA
- B. IIA
- C. IIIA
- D. IVA
Explanation: The melting and boiling points of IA and IIA group elements decrease from top to bottom due to the increase in their atomic sizes.
Correct answer: IVA- A. Ca
- B. Fe
- C. Cu
- D. Zn
Explanation: Zn is an amphoteric Oxides of relatively less electropositive elements, such as BeO, Al2O3, Bi2O3 and ZnO are amphoteric and behave as…
Correct answer: Zn- A. Bottom right position
- B. Bottom left position
- C. Top right position
- D. Top left position
Explanation: Most electropositive elements are in bottom left as they lose electron easily due to large size
Correct answer: Bottom left position- A. Mg > Sr
- B. Ba > Mg
- C. Lu > Ce
- D. Cl > I
Explanation: While Ba and Mg are in the same group, Ba has more shells than Mg, leading to a larger atomic size due to the addition of extra electron…
Correct answer: Ba > Mg272. Elements in the same vertical group of the periodic table have the same number of valence electrons.
- A. Number of valence electrons**
- B. Atomic number:
- C. Atomic mass
- D. Atomic volume
Explanation: - **Correct Option: (a) Number of valence electrons** Explanation: Elements in the same group of the periodic table have similar chemical…
Correct answer: Number of valence electrons**- A. Sb < Cl < P < S < As
- B. Cl < Sb < P < As < S
- C. As < P < S < Sb < Cl
- D. P < Sb < Cl < S < As
Explanation: Ionization energy generally increases as you move across a period from left to right and decreases as you move down a group.
Correct answer: Cl < Sb < P < As < S274. The property that always increases on going from top to bottom in a group is (a) Metallic character.
- A. Metallic character
- B. Electronegativity
- C. Oxidizing power
- D. Tendency to get reduced
Explanation: Metallic character increases down a group as the number of electron shells increases, leading to weaker attractions between outer…
Correct answer: Metallic character- A. Alkali metals (I-A)
- B. Group-14 elements (IV-A)
- C. Group-18 elements (VIII-A)
- D. Halogens (VII-A)
Explanation: Group-18 elements (noble gases) are not representative elements as they have complete valence electron shells and generally do not form…
Correct answer: Group-18 elements (VIII-A)- A. Fluorine
- B. Chlorine
- C. Bromine
- D. Iodine
Explanation: Among halogens, bromine has the highest boiling point due to stronger intermolecular forces compared to the other halogens, but weaker…
Correct answer: Bromine- A. H+
- B. H-
- C. Mg2
- D. Ca2+
Explanation: H- (hydride ion) is a very small and highly mobile ion. Due to its small size and high mobility, it often forms covalent bonds with other…
Correct answer: H-- A. Al-Razi
- B. Moscley
- C. Dobereiner
- D. Democritus
Explanation: While Al-Razi made significant contributions to chemistry and medicine, he is not recognized for any specific contributions to the…
Correct answer: Al-Razi- A. Valency
- B. Atomic mass
- C. Atomic number
- D. Valence electrons
Explanation: The atomic number (protons in the nucleus) uniquely identifies each element and determines its place in the periodic table.
Correct answer: Atomic number- A. 6th
- B. 7th
- C. 2nd & 3rd both
- D. Valence electrons
Explanation: The seventh period consists of 18 elements, making it the longest period in the modern periodic table.
Correct answer: 7th