Question

1. which group contains an element which is liquid at stpp

a. 1 b. 2 c. 13 d. 15 e. 17

1. the elements on the periodic table are arranged in order of increasing

a. boiling point
b. atomic number
c. electronegativity
d. atomic mass

1. which of the following is an alkali metal?

a. h b. xe c. cl d. cs

1. which of the following is a noble gas?

a. li b. br c. ar d. f

1. which of the following is a halogen?

a. i b. k c. na d. ne

Explanation:

1. Question 1: Group 17 (halogens) has bromine (\(Br_2\)) which is liquid at STP.
2. Question 2: The modern periodic table arranges elements by increasing atomic number.
3. Question 3: Alkali metals are in Group 1. Cesium (\(Cs\)) is in Group 1.
4. Question 4: Noble gases are in Group 18. Argon (\(Ar\)) is in Group 18.
5. Question 5: Halogens are in Group 17. Iodine (\(I\)) is in Group 17.

Answer:

1. e. 17
2. b. atomic number
3. d. Cs
4. c. Ar
5. a. I