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Which of the following statements is correct for compound HgCl2, SnCl2 and F2O have 

(1) all have linear shape

(2) HgCl2 and SnCl2 are linear and HgCl2 is V-shaped

(3) HgCl2 is linear while SnCl2 and F2O are V-shaped

(4) none of these