Question FBQ1 : ___ is a group 2 metal that is not counted as an alkaline earth metal since its oxide is not alkaline Answer: Beryllium Question FBQ2 : Group 2A elements are called alkaline earth metals because they react with oxygen to form _______ Answer: Oxides Question FBQ3 : Alkaline earth metals have ______ valence electrons Answer: Two Question FBQ4 : Alkaline earth metals from ions with a ______ charge Answer: +2 Question FBQ5 : The polarizing power of a cation is ________ proportional to its size Answer: inversely Question FBQ6 : Group 1 metals are known as ______ Answer: alkaline metals Question FBQ7 : Group 2 elements are also known as _______ earth metals Answer: alkaline Question FBQ8 : John Newlands, an English chemist reported his law of _________ Answer: Octaves Question FBQ9 : If elements are arranged sequentially in order of increasing __________, a periodic repetition, that is, periodicity in properties is observed Answer: Atomic weight Question FBQ10 : The modern periodic law states that the properties of elements are ______ functions of their atomic numbers Answer: periodic Question FBQ11 : The systematic name for the element with atomic number of 105 is called ______ Answer: Unnilpentium Question FBQ13 : According to _________, no two electrons in the same atom can have the same value of n, l and mi. Answer: Exclusion principle Question FBQ14 : According to _____ rule, every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin Answer: Hunds Question FBQ15 : Elements in the same period have same number of _______ Answer: Shell Question FBQ16 : Elements in the same group have the same number of ________ Answer: Valence electrons Question FBQ17 : The electronic configuration of an atom with atomic number 9 is given as ______ Answer: 1s2 2s2 2p5 Question FBQ18 : The ionic radii of metallic cations are ____ than the atomic radii Answer: Smaller Question FBQ19 : The ionic radii of non-metallic anion are ____ than the atomic radii Answer: Bigger Question FBQ20 : Electron affinity _______ across the period Answer: Increases Question FBQ21 : Complete the following reaction Na2C2 + 2H2O → 2NaOH + ___ Answer: C2H2 Question FBQ22 : When Li2CO3 is decomposed under heat it gives ____ and CO2 Answer: Li2O Question FBQ23 : KO2 is an example of a ____ oxide Answer: Super Question FBQ24 : When a metal is surrounded by solvent molecules, the phenomenon is called ______ Answer: Solvation Question FBQ25 : Electrons associated with the solvent are known as ______ electrons Answer: Solvated Question FBQ26 : ________ is an alkaline earth metals useful in the formation of bones and teeth Answer: Magnesium Question FBQ27 : Complete the following reaction; Ca(OH)2 + CO2 → ____ + H2O Answer: CaCO3 Question FBQ28 : All group 2 elements except ___ form hydrides Answer: Beryllium Question FBQ29 : Complex formation is favoured by ____, highly charged cations with suitable empty orbitals of approximately the right energy with which the ligand orbitals can combine Answer: Small Question FBQ30 : In chlorophyll ____ is coordinated to four nitrogen atoms in the heterocyclic porphyrin ring system Answer: Magnesium Question FBQ31 : The hydrated ionic radii of alkali metal ions _____ down the group Answer: Decreases Question FBQ32 : The tendency to form complexes ______ with increasing atomic number in alkali earth metals Answer: Decreases Question FBQ33 : The density of alkali earth metals shrinks from beryllium to calcium, but ____ considerably thereafter up to radium Answer: Increases Question FBQ12 : The systematic name for the element with atomic number 102 is called ______ Answer: Unilbium Question FBQ34 : ____ is a metallic cation that is isoelectronic to Al3+ Answer: Mg2+ Question FBQ35 : Potassium (19K) has an effective Z value of ___ Answer: 2.20 Question MCQ1 : Alkaline earth metals form ions with a ______ charge Answer: +2 Question MCQ2 : Which element is not an alkaline earth metals? Answer: zirconium Question MCQ3 : The classification of certain groups of three elements into TRIADS was done by? Answer: Dobereiner Question MCQ4 : Classification of elements according to increasing atomic weight on a line which spiraled around a cylinder from the bottom to top was done by ? Answer: De chancourtois Question MCQ5 : The Law of octaves was put forward by? Answer: Newlands Question MCQ6 : Arranging elements in increasing atomic weight leading to a periodicity in their properties was done by Answer: Mendeleev Question MCQ7 : Both elements of the 1st period contains valence electrons in Answer: K shell Question MCQ8 : In periodic table, helium is placed at Answer: top right corner Question MCQ9 : On the basis of electronic configuration group and period an element with atomic number of 5 is Answer: 2 and IIIA Question MCQ10 : Chemical properties depends upon Answer: valence shell electronic configuration Question MCQ11 : Nobel gases are present in Answer: VIIIA group Question MCQ12 : Energy required to remove an electron from the outermost shell is called Answer: ionization energy Question MCQ13 : As we go from top to bottom in a group shielding effect Answer: Increases Question MCQ14 : Group A elements are called Answer: transition elements Question MCQ15 : Period number of element indicates Answer: value of valence shell Question MCQ16 : Ability of atom to attract electrons towards itself is called Answer: Electronegativity Question MCQ17 : Average distance between nucleus and outer shell is called Answer: atomic size Question MCQ18 : Groups containing alkaline earth metals are Answer: IIA Question MCQ19 : Physical properties depends on the Answer: size of atom Question MCQ20 : Elements that lie in same column have Answer: similar properties Question MCQ21 : As we go from left to right across period, electron affinity Answer: Increases Question MCQ22 : Elements are arranged in order of Answer: increasing atomic number Question MCQ23 : Decrease in force of attraction between valence electrons and nucleus by innver electrons is called Answer: shielding effect Question MCQ24 : 14 elements after actinium is called Answer: Actinides Question MCQ25 : an element that has an atomic number of 15 with which of the following elements will it show similar chemical properties Answer: N (7) Question MCQ26 : The group number and period number respectively of an element with atomic number 8 is Answer: 6, 2 Question MCQ27 : Identify the wrong sequence of elements in a group Answer: Cu, Au, Ag Question MCQ28 : An element with atomic number ______ will form a basic oxide Answer: 11 Question MCQ29 : What principle/rule is violated in the configuration 1s2 2s3 Answer: Pauli's exclusion principle Question MCQ30 : What principle/ rule is violated in the configuration 1s2 2s2 2px2 2py1 Answer: Hund's rule Question MCQ31 : What principle/ rule is violated in the electronic configuration 1s2 2px2 Answer: Aufbau's principle Question MCQ32 : What type of bonding is found in Ammonia molecule Answer: Covalent Question MCQ33 : The polarizing power of a cation is _________ proportional to its size Answer: Inversely Question MCQ34 : Na3AlF6 is known as Answer: Cryolite Question MCQ35 : When a metal is surrounded by solvent molecules, the phenomenon is called Answer: Solvation