If an element has the electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁴, It is

• a metal.

• an alkaline earth metal.

• an s-block element.

• a p-block element.

An element is electronegative if

• it has a tendency to exist in the gaseous form.

• its ions dissolve readily in water.

• it has a tendency to lose electrons.

• it has a tendency to gain electrons.

Which among the element 1. Carbon 2. Oxygen 3. Copper 4. Bromine 5. Zinc, will not react with either water or steam?

• 1 and 2.

• 2 and 3.

• 3 and 4.

• 1,2 and 3.

Which of the following group of physical properties increases from left to right of the periodic table? 1. Ionization energy 2 atomic radium 3 electronegative 4 electron affinity

• 1 and 2

• 1, 2 and 3

• 1, 3 and 4.

• 1, 2, 3 and 4

The greater the difference in electronegativity between bonded atoms, the

• lowers the polarity of the bond.

• higher the polarity of the bond.

• weaker the bond.

• higher the possibility of the substance formed being a molecule.

Which of the following physical properties decrease across the periodic table?

• Ionization potential.

• Electron affinity.

• Electronegativity.

• Atomic radius.

The energy change accompanying the addition of an electron to a gaseous atom is called

• first ionization energy.

• second ionization energy.

• electron affinity.

• electronegativity.

The type of energy involved in the above transformation is

• ionization energy.

• sublimation energy.

• lattice energy.

• electron affinity.

Which of the following is arranged in order of increasing electronegativity?

• Chlorine, aluminum, magnesium, phosphorus, sodium.

• Sodium, magnesium, aluminum, phosphorus, chlorine.

• Chlorine, phosphorus, aluminum, magnesium, sodium.

• Sodium, chlorine, phosphorus, magnesium, aluminum.

The electron configuration of two elements with similar chemical properties are represented by

• Is² 2s²2p³ and Is² 2s²2p4.

• Is² 2s²2p¹ and 1s²2s²2p6 3s¹.

• 1s²2s²2p6 3s¹ and Is² 2s¹.

• Is² 2s²2p¹ and Is² 2s¹.