1) DETERMINE THE GROUP OF THE FOLLOWING [ 28 X ] a) b) c) d) e) f) 2) DETERMINE THE GROUP OF THE FOLLOWING [ 20 Ca 3- ] a) b) c) d) e) f) 3) DETERMINE THE PERIOD OF THE FOLLOWING. [ 17 Y 2+ ] a) b) c) d) e) f) 4) DETERMINE THE PERIOD OF THE FOLLOWING. [ 25 Z 2+ ] a) b) c) d) e) f) 5) DETERMINE THE BLOCK OF THE FOLLOWING. [ 11 Na - ] a) b) c) d) e) f) 6) DETERMINE THE BLOCK OF THE FOLLOWING. [ 24 Cr ] a) b) c) d) e) f) 7) SHOW HOW TO DETERMINE THE VALENCE ELECTRON. [ 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 1 ,4s 2 ] a) 3d 1 b) 4s 2 c) 4s 2 , 3d 1 d) 3s 2 , 3p 6  e) 3p 6 , 3d 1 f) 4s 2 , 3p 6  8) 2 FACTORS THAT AFFECT SIZE OF ATOM. a) EFFECTIVE NUCLEAR CHARGE AND ATTRACTION b) SHIELDING EFFECT AND ATTRACTION c) EFFECTIVE NUCLEAR CHARGE AND REPULSION d) ATTRACTION AND REPULSION e) SHIELDING EFFECT AND EFFECTIVE NUCLEAR CHARGE f) SHIELDING EFFECT AND REPULSION 9) DEFINE SHIELDING EFFECT. a) THE NUCLEAR CHARGE ACTUALLY 'FELT' BY AN ELECTRON. b)  THE DECREASE IN ATTRACTION BETWEEN ELECTRON AND THE NUCLEUS IN ANY ATOM c) THE INCREASE IN ATTRACTION BETWEEN ELECTRON AND THE NUCLEUS IN ANY ATOM. d) THE DECREASE IN REPULSION BETWEEN ELECTRON AND THE ELECTRON IN ANY ATOMS e) THE MINIMUM AMOUNT OF ENERGY TO REMOVE ONE MOLE OF ELECTRON f) THE RELATIVE TENDENCY OF AN ATOM TO ATTRACT ELECTRON TO ITSELF. 10) WHAT INCREASE GOING DOWN THE GROUP ? a) NO. OF SHELL , SHIELDING EFFECT, SIZE OF ATOM b) NO OF SHELL, SIZE OF ATOM, EFFECTIVE NUCLEAR CHARGE c) PRINCIPAL QUANTUM NUMBER, ATTRACTION, SIZE ATOM d) SIZE OF ATOM, REPULSION AND SHIELDING EFFECT e) EFFECTIVE NUCLEAR CHARGE, SHIELDING EFFECT, NO OF INNER SHELL f) NO OF SHELL, ATTRACTION, SHIELDING EFFECT 11) WHAT DECREASE ACROSS THE PERIOD ? a) NO OF PROTON b) REPULSION c) SIZE OF ATOM d) SHIELDING EFFECT e) EFFECTIVE NUCLEAR CHARGE f) ATTRACTION 12) ANIONS ARE LARGER THAN THE ATOMS. WHY? a) ELECTRON REMOVED, LARGER VOLUME, REPULSION INCREASE b) PUSHED APART, SMALLER VOLUME, SAME ELECTRON  c) ELECTRON REMOVED,ATTRACTION INCREASE, PULLED CLOSER d) ATTRACTION INCREASE, PUSHED APART, ELECTRON ADDED e) PULLED CLOSER TOGETHER, REPULSION INCREASE, ELECTRON REMOVED f) ELECTRON ADDED, LARGER VOLUME, REPULSION INCREASE 13) CATIONS ARE SMALLER THAN THE ATOMS. WHY?  a) ELECTRON ADDED, REPULSION STRONGER , PUSHED APART b) ELECTRON REMOVED,ATTRACTION STRONGER, PULLED CLOSER c) ELECTRON REMOVED, PULLED CLOSER, REPULSION INCREASE d) ATTRACTION DECREASE, ELECTRON REMOVED, PULLED CLOSER e) PUSHED APART, ELECTRON ADDED, ATTRACTION INCREASE f) SIZE BIGGER THAN ANION 14) COMPARE THE SIZE OF Ca and Ca 2+ a) Ca 2+ equal to Ca b) Ca larger than Ca 2+ c) Ca 2+ larger than Ca d) Ca 2+ smaller than Ca e) Ca equal to Ca 2+ f) Ca = Ca 2+ 15) COMPARE THE SIZE OF O AND O 2- a) O LARGER THAN O 2- b) O 2- LARGER THAN O c) O EQUAL TO O 2- d) O 2- EQUAL TO O e) O SMALLER THAN O 2-  f) O 2- = O 16) DEFINE FIRST IONISATION ENERGY a) THE MINIMUM AMOUNT OF ENERGY REQUIRED TO REMOVE ONE MOLE OF ELECTRON FROM THE OUTERMOST ORBITAL b) THE RELATIVE TENDENCY OF AN ATOM TO ATTRACT ELECTRONS TO ITSELF c) DECREASE IN ATTRACTION BETWEEN ELECTRON AND THE NUCLEUS d) HALF OF THE DISTANCE BETWEEN THE NUCLEI OF TWO ADJACENT INDENTICAL ATOMS e) THE MAXIMUM AMOUNT OF ENERGY REQUIRED TO REMOVED ONE MOLE OF ELECTRON f) THE MINIMUM AMOUNT OF ENERGY REQUIRED TO ADDED ONE MOLE OF ELECTRON FROM THE OUTERMOST ORBITAL   17) EXPLAIN WHY O HAS LOWER IONISATION ENERGY THAN N ? a) MORE ENERGY NEEDED TO REMOVE ELECTRON FROM O b) PARTIALLY-FILLED 2p ORBITAL IN N IS MORE STABLE THAN HALF-FILLED 2p ORBITAL IN O  c) HALF-FILLED 2p ORBITAL IN N MORE STABLE THAN PARTIALLY-FILLED 2p IN O d) FULLY-FILLED 2p ORBITAL IN N MORE STABLE THAN PARTIALLY-FILLED 2p IN O e) FULLY-FILLED 2p ORBITAL IN N IS MORE STABLE THAN HALF-FILLED 2p ORBITAL IN O   f) N AND O RECEIVE ELECTRON FROM A 2p ELECTRON.  18) DEFINE ELECTRONEGATIVITY. a) THE MINIMUM AMOUNT OF ENERGY REQUIRED TO REMOVED ONE MOLE OF ELECTRON FROM THE OUTERMOST ORBITAL IN ONE MOLE OF GASEOUS ATOM b) DECREASE IN ATTRACTION BETWEEN ELECTRON AND THE NUCLEUS c) THE TENDENCY FOR ELEMENT TO GAIN, LOSE AND SHARE ELECTRONS d) THE NUCLEAR CHARGE ACTUALLY 'FELT' BY AN ELECTRON. e) THE RELATIVE TENDENCY OF AN ATOM TO ATTRACT ELECTRONS TO ITSELF WHEN CHEMICALLY COMBINED WITH ANOTHER ATOM f) HALF OF THE DISTANCE BETWEEN THE NUCLEI OF TWO ADJACENT IDENTICAL ATOMS 19) ARRANGE IN ASCENDING ORDER THE ELECTRONEGATIVITY OF THE FOLLOWING. [PROTON NO. X=12, L=11, M=17, N=8 ] a) K,N,M,L b) M,N,K,L c) K,M,L,N d) L,K,N,M e) L,N,M,K f) N,K,L,M 20) ARRANGE IN ASCENDING ORDER THE IONISATION ENERGY OF THE FOLLOWING. [ PROTON NO. Y=24, Z=13, W=20, R=31 ] a) W,Y,R,Z b) W,R,Y,Z c) Z,Y,R,W d) R,Y,Z,W e) Y,W,R,Z f) R,W,Y,Z

6. PERIODIC TABLE

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