Classification of Modern Periodic Table

Q. Hydrogen is a metal or nonmetal

Q.

An element belongs to the 3rd period and Group IIIA (13) of the periodic table.State:

(a) the number of valence electrons,

(b) the valency,

(c) if it is a metal or non-metal ?

(d) the name of the element.

Q.

Element P has atomic number 19.To which group and period, does P belong ? Is it a metal or a non-metal ? Why ?

Q.

Group 18 is also called Zero group.True or False?

1. True

2. False

Q.

The ionization energy of an atom is the energy:

1. needed to transfer an electron from one orbit to another.

2. needed to add electron to an atom.

3. needed to convert the atom into radioactive isotope.

4. just enough to cause an electron to escape from the atom.

Q.

The energy required to remove an electron from an isolated gaseous atom is called __ energy.

Q. The valency of noble gases, in general is

1. Zero
2. Two
3. One
4. Eight

Q.

Which of the following has the maximum nonmetallic character?

1. F

2. Cl

3. I

4. Br

Q. An atom has an electronic configuration 2, 8, 5. To which of the following elements, mentioned below with their atomic numbers, it would be chemically similar?

1. F (9)
2. Na (11)
3. N (7)
4. Ar (18)

Q. Most nonmetallic elements are present on the left side of the periodic table.

1. True
2. False

Q. Which has the highest ionization enthalpy O, N, F or S.

Q.

An atom of which of the following elements has the smallest volume?

1. Oxygen

2. Carbon

3. Nitrogen

4. Boron

Q. Which of the following pairs are chemically dissimilar?

1. Na, K
2. Ca, Cu
3. Ba, Sr
4. Zr, Hf

Q.

The energy required to remove an electron from an isolated gaseous atom is called __ energy.