Which of the following is the correct chemical symbol for Potassium A) K B) Po C

Question

Which of the following is the correct chemical symbol for Potassium A) K B) Po C) Pu D) P Which of the following is an incorrect chemical symbol A) Ti B) SN C) Ti D) Zn Which of the following is NOT a property of metallic elements A) malleability B) ductility C) low melting point D) high density Of the following pairs of elements, select the one which contains 2 non-metals A) Se, P B) C, Ca C) N, Cu D) Ni, Hg Write the chemical symbol for an element in each of the following categories: liquid metal liquid non-metal Which of the occurs as a diatomic element A) Na B) He C) Ne D) Br Give the chemical symbol for two metalloids ___ Give two properties of metals and two properties of non-metals Which of the following is a correct chemical formula A) Fe2SO_4 B) SO_3 C) NaCL D)Cu^2 O The total combined number of atoms in the formula (NH_4)_2 (C_2 O_4) is ___ Balance the following chemical equation: ___ Fe + ___ O_2 rightarrow Fe_2 O_3 Classify CCl_4 as either ionic or molecular ___

Explanation / Answer

1. potassium latin name is kalium. So potassium symbol is K

A.K

2. B.SN

3. metal have high melting point and high boiling point

   C.low melting point

4. A. Se, P

5. liquid metal is Hg (mercury)                     liquid non-metal Br2 ( bromine)

6. Br2 is diatomic element

   D.Br2

7. As,Sb

8.metal are good conductors. non-metal are bad conductors

metal have mallieability and ductility. .

9. B.So3

10. 16 atoms

11.4 Fe   + 3O2 -----------> 2Fe2O3

12.molecular

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