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 41 of 68
- A. 2s
- B. 1s
- C. 2d
- D. 3d
Explanation: OPTION A: Group 2 is alkaline metals. Alkaline earth metals have two electrons in their valence shell and the last electron enters the…
Correct answer: 2s- A. d-block
- B. s-block
- C. f-block
- D. p-block
Explanation: The s-block in the periodic table of elements occupies the alkali metals and alkaline earth metals, also known as groups 1 and 2.
Correct answer: s-block803. BeO is _ in nature.
- A. Acidic
- B. Basic
- C. Amphoteric
- D. Neutral
Explanation: Because BeO is insoluble in pure water but reacts with either an acid (like a base would) or a base (like an acid would), we say that it…
Correct answer: Amphoteric- A. I
- B. Cl
- C. Fe
- D. F
Explanation: Halogens are elements present in group 7A of the periodic table and include, Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and…
Correct answer: Fe- A. as antacid
- B. as refractory material
- C. vulcanisation of rubber
- D. all of the above
Explanation: Magnesium oxide is used as antacid because it is a basic oxide and neutralise the acid.
Correct answer: all of the above- A. Lithium
- B. Radium
- C. Boron
- D. Uranium
Explanation: The correct answer is Radium. Marie and Pierre Curie successfully isolated radium from pitchblende in 1902, contributing greatly to the…
Correct answer: Radium- A. Magnesium and Sodium
- B. Magnesium and Copper
- C. Magnesium and Barium
- D. Magnesium and Potassium
Explanation: Refer to the image below. As we can see in the periodic table, Magnesium and Barium are the only two metals from the options which are in…
Correct answer: Magnesium and Barium- A. hydride ion
- B. hydronium ion
- C. proton
- D. hydroxyl ion
Explanation: The Ionization of a hydrogen atom refers to the process of removing an electron from a hydrogen atom, resulting in the formation of a…
Correct answer: proton- A. K2CO3
- B. Li2CO3
- C. Na2CO3
- D. Rb2CO3
Explanation: All except Lithium are soluble in water and stable to heat.
Correct answer: Li2CO3- A. Orange red
- B. Golden yellow
- C. Red
- D. Pink
Explanation: The flame of Ca is orange-red so, A is the correct option. A yellow flame is of Sodium (Na), Red flame is of Lithium (Li), and Pink flame…
Correct answer: Orange red- A. BaCO3
- B. MgCO3
- C. CaCO3
- D. SrCO3
Explanation: 'Barium carbonate' is thermally the most stable. As we move down the group, the charge density of the cation decreases due to increasing…
Correct answer: BaCO3- A. Ba
- B. Be
- C. Mg
- D. Ca
Explanation: The alkaline earth metals burn in oxygen to produce oxides or in the case of barium, peroxide.
Correct answer: Ba- A. alkaline earth metals
- B. alkali metals
- C. chalcogens
- D. noble metals
Explanation: Group 1 elements include the alkali metals, Li, Na, K, Rb, Cs, Fr. The alkali metals are all soft, shiny and metallic when cut.
Correct answer: alkali metals- A. Bromine
- B. Fluorine
- C. Chlorine
- D. Iodine
Explanation: One of the easiest and cost effective way to clean water is to add some amount of chlorine into it.
Correct answer: Chlorine- A. Lanthanides
- B. Actinides
- C. Alkali metals
- D. Noble gases
Explanation: The reactivity of lanthanides is generally lower than that of the corresponding alkali and alkaline earth metals.
Correct answer: Noble gases- A. Na
- B. K
- C. Cs
- D. Mg
Explanation: Alkali metals are Group 1 metals and Mg is in Group 2 and the rest of the three options are elements from Group 1.
Correct answer: Mg- A. Cs
- B. Na
- C. Li
- D. K
Explanation: Li more closely resembles the metals of group 2 than the metals of its own group (1).
Correct answer: Li- A. HF
- B. NaCl
- C. HCl
- D. CsF
Explanation: CsF has the highest ionic character because Cs is the most electropositive element and Fluorine is the most electronegative element.
Correct answer: CsF- A. Number of shells
- B. Number of electrons
- C. Electronic configuration
- D. Number of protons
Explanation: The atomic number of Na is 11, so it has 11 electrons and 11 protons . But Na+ has lost 1 electron, so Na+ has 10 electrons and 11…
Correct answer: Number of protons- A. Ⅰ-B
- B. Ⅱ-B
- C. Ⅰ-A
- D. Ⅲ-A
Explanation: The given valence shell electronic configuration is 4s2, 4p1. The group number is represented by valence electrons.
Correct answer: Ⅲ-A