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Paper 1 | Objectives | 53 Questions
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Paper 1 | Objectives
Which of the following scientists discovered the neutron?
A. Ernest Rutherford
B. J.J Thompson
C. James Chadwick
D. M illikan
How many protons does 4020Ca contain?
If 100 atoms of element X contains 70 atoms of 9X and 30 atoms of 11X, calculate the relative atomic mass of X
Consider the reaction represented by the equation: 23892U + 10 → 139 56Ba + 94 36Kr + 31 0n. The reaction represents a
A. nuclear fission
B. nuclear fusion
C. radioactive decay
D. spontaneous disintegration
How many orbitals are associated with the p-sub energy level?
Which of the following elements has the electronic configuration:1s22s22p63s23p1? [11Na, 13A1, 14N,16S]
The following properties are characteristics of transition elements except
A. formation of complex ions
B. fixed oxidation states
C. formation of coloured compounds
D. catalytic abilities
Which of the following ions is isoelectronic with neon? [3Li, 3F, 10Ne, 17CI,19K]
Which of the following electronic configurations correctly represents an element in period 3 of the periodic table?
A. 1s2 2s2 2p2
B. 1s2 2s2 2p6
C. 1s2 2s2 2p6 3s2 3p4
D. 1s2 2s2 2p6 3s2 3p6 4s1
An element Q forms a compound QCI5. In which group of the periodic table is Q?
Which of the statements about the behaviour of the atom is correct?
A. atomic size decreases down the group
B. atomic size increases across the period
C. anions are smaller than the parent atom
D. cations are smaller than the parent atom
Preview displays only 11 out of the 53 Questions