Q1 · medium · AI-verified
Which of the following properties generally DECREASES on moving from left to right across a period in the modern periodic table?
- Non-metallic character
- Ionization energy
- Electronegativity
- Atomic radius
Q2 · hard · AI-verified
Which of the following elements has the highest electronegativity according to the Pauling scale?
- Chlorine
- Oxygen
- Fluorine
- Nitrogen
Q3 · medium · AI-verified
Which of the following is the correct trend for metallic character as we move DOWN a group in the modern periodic table?
- Metallic character decreases
- Metallic character first increases then decreases
- Metallic character increases
- Metallic character remains unchanged
Q4 · easy · AI-verified
Elements in the same group of the Modern Periodic Table have the same number of:
- Neutrons
- Valence electrons
- Electron shells
- Protons
Q5 · medium · AI-verified
The element with atomic number 19 belongs to which period and group in the modern periodic table?
- Period 3, Group 9
- Period 3, Group 1
- Period 4, Group 2
- Period 4, Group 1