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ICSE Revision 2016 : Chemistry (Good Earth School, Kanchipuram)

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Anirudh Giri
Good Earth School, Kanchipuram

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Good Earth School Naduveerapattu Date: Class: X Chemistry Revision I. Fill in the blanks: (1) The modern Periodic Table has ______________ periods. (2) Each ______________ in the Periodic Table is comprised of elements having the same number of electron shells. (3) Elements in a period, all have the same number of ______________ in their atoms. (4) Elements in a group, all have the same number of ______________. (5) The most active metals are located in ______________ 1 and 2 of the Periodic Table. (6) The most reactive non-metals comprise group ______________ of the Periodic Table. (7) The elements of ______________ are known as transition elements. (8) The elements occupying left and right side groups of Periodic Table are called ______________ elements. (9) The rare gases are placed in ______________ group at the end. (10) Elements from atomic number 57 to ______________ occupy same place in Periodic Table. These elements are called ______________. (11) The properties of elements are periodic function of their ______________. (12) The atomic size ______________ as we move left to right across the period, because the ______________ increases but the ______________ remains the same. (13) The metallic character ______________ in a group as one moves from top to bottom. (14) The metallic character ______________ in a group as one moves from right to left. (15) In a period or in a group, the larger the atomic size of an element, the ______________ metallic is the element. (16) Moving across a ______________ of the periodic table, the elements show increasing ______________ character. (17) The amount of energy involved in the reaction X + energy X+ + C is known as the ______________ of the element X. (18) Across a period, the ionization potential ______________. (19) Down the group, electron affinity ______________. (20) The higher the electron affinity of a non-metal, ______________ the chemically reactive the non-metal is. (21) The tendency to gain an electron ______________ on moving down a group and ______________ on moving across a period in the Periodic Table. (22) Elements having high ionization potential have ______________ electron affinities. (23) The electronegativity of elements ______________ across a period and ______________ down a group. (24) In general, non-metals are ______________ electronegative than metals. (25) On moving from left to right in a given period, the number of shells ______________. (26) Elements X belongs to group 2 and period 3 of the Periodic Table. It has ______________ electrons in the outer most shell. (27) Each period except period 1 in the Periodic Table begins with ______________ and ends up with a ______________. (28) The metallic and non-metallic character depends upon the ______________ and ______________ of the elements. (29) Ionic compounds consist of ______________ charged ions. (30) Ionic compounds have ______________ melting points due to ______________ ionic bonds.

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