1. Which element is most similar to Cl a. Li b. Fe d. H C. e. Cs 2. What is the

Question

1. Which element is most similar to Cl a. Li b. Fe d. H C. e. Cs 2. What is the most likely identity of a metal sample that has a mass of 14.4g and when placed in a graduated cylinder containing 23.5mL of water, the volume of the graduated cylinder reads 26.7mL. a. Titanium (4.506 g/mL) b. Osmium (22.61 g/mL) c. Calcium (1.540 g/ml) d. Lithium (0.534 g/mL) e. Aluminum (2.712 g/mL) 3. Which of the following molecules has an empirical formula that differs from its molecular formula? a. CoHo b. CsH12 c. NH3 d. CO2 e. NsO2

Explanation / Answer

Q no 1:-Since Cl belongs to the halogen group or group 17 in the periodic table , here in this that we have only one element which belongs to this group ie Group 17 which is I (iodine). Also both Cl and I have almost similar physical and chemical properties like (valence electrons, reactivity etc). While as (Li, Fe, H, Cs) belong to other groups and are not similar in any way to Chlorine(Cl).

Hence option (c) is correct.

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