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The electronic configuration of four elements are given in brackets:
L (1s2, 2s2, 2p1, ) M (1s1, 2s2, 2p5)
Q (1s2, 2s2, 2p6 3s1,) R ( 1s1, 2s2, 2p2)
The element that would most readily form a diatomic molecule is:
(1) Q
(2) M
(3) R
(4) L
Ans: M
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Preparation Of Raw Materials For Processing All the incoming raw materials, including packaging materials, should be evaluated and monitored to prevent potential contamination
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An ion has 18 electrons in the outermost shell, it is: (1) Cu + (2) Th 4+ (3) Cs + (4) K + Ans
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Lassaigne method This is employed to detect halogen, nitrogen and sulphur. Organic compounds are fused along with dry sodium in a fusion-tube and fused mass after extraction wi
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If wavelength of photon is 2.2x10 -11 m, h= 6.6x 10 -34 J-sec, then momentum of photon is: (1) 3x 10 -23 kgms -1 (2) 3.33x 10 22 kgms -1 (3) 1.452x 10-
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