ATOMIC STRUCTURE AND PERIODIC TABLE X
1. The smallest particle of an element is called 'atom.' There are 3 basic particles of atom, that are proton, neutron, and electron. The mass and the charge of each particle in order are ....
a. 1, +1; 1, 0; 0, -1
b. 1, -1; 1, +1; 0, +1
c. 1, 0; 0, 1; 0, -1e
d. 0, +1; 1, 0; 0, -1
e. 0, -1, 1, 0; 1, -1
2. The atomic number and mass number of element X are 17 and 35. The number of protons, neutrons, and electrons in order are ....
a. 17, 17, 18
b. 17, 18, 17
c. 17, 18, 18
d. 18, 17, 17
e. 18, 17, 18
3. Based on Niels Bohr's theory, electron configuration of elements A-17 and B-19 are ....
a. (2,8,7) and (2,8,9)
b. (2,8,2,5) and (2,8,8,1)
c. (2,8,7) and (2,8,8,1)
d. (2,2,8,5) and (2,8,7)
e. (2,8,7) and (2,9,8)
4. In general, elements can be grouped as metal and non metal. The following electron configuration of metal and non metal in order are ....
a. (2,1) and (2,8,1)
b. (2,8,1) and (2,8,2)
c. (2,8,2) and (2,8,7)
d. (2,8,7) and (2,8,8)
e. (2,1) and (2,8,1)
5. Modern periodic table is arranged according to the increasing atomic number. The correct statement about periodic table is ....
a. there are two different period, A and B
b. in the same period, elements have similar physical properties
c. consists of 7 period, each of them has similar properties
d. in the same group there are elements which have similar valence electrons
e. based on IUPAC rule, there are 16 groups of elements
6. An element is a metal, the position in the periodic table is in the third period. The possible properties of this element is ....
a. has 2 electron shells
b. its valence electrons are 4
c. its electron configuration (3,4)
d. atomic number is 11
e. atomic mass is 22
7. An element X has atomic number 19. The position of X in the periodic table is in the ... period and ... group.
a. 2nd, VIIA
b. 3rd, IIIA
c. 3rd, VIIIB
d. 4th, IA
e. 4th, IB
8. Elements which have atomic number 11, 12, 13 in order are have one of the following properties. This is ....
a. their radii decrease
b. valence electrons decrease
c. ionisation energies decrease
d. metal properties increase
e. easy to loose electrons
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