Transcribed Image Text: Empirical formula is

Transcribed Image Text: Empirical formula is
6C.
% of Sulphur= [S] x 100
S0.0-
yd ebivic
32
x 100% = 50%m
%3D
[1 (32) +2(16)]
(CH,)n=2×42 [Hint: M,= 2x V.D]
(12+2)n=84; n=6; hence compound is C,H,2
Mg + 2HCI → MgCl, + H,
7A.
8.
From the equation:
alumoeluaalch
= slumot leohioma
1mol Mg produces 1mol H,
Or
24g Mg produces 22.4dm’ H, ei sid
9B.
Compare Q57
n negyoro lo on lsic
CHAPTER 3 eo to easm yd.
THE ATOMIC STRUCTURE. ELECTRONIC
CONFIGURATION.
PERIODICITY OF ELEMENTS.
– The periodic classification of the elements is an
arrangement of the elements in order of their A. atomic
weights B. isotopic weights C. molecular weight D. atomic
numbers E. atom masses (1978:Q5) SD
. The nucleus of an atom contains A. protons only B. neutron
only C. protons and electrons D. neutrons and electrons
E. protons and neutrons
not iso(1978:Q28)
– The size(diameters) of five atoms are in order R

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