10th Samacheer Quiz

Q1. What does the group of an element help indicate?

Similar chemical properties Nuclear colour Only melting point Atomic speed

Q2. Across a period from left to right, electronegativity generally:

Decreases Increases Remains unchanged Becomes zero

Q3. The modern periodic table is arranged by increasing atomic number.

Atomic number Mass only Density only Boiling point only

Q4. Across a period from left to right, atomic size generally:

Increases Decreases Remains unchanged Doubles

Q5. Elements in the same group generally have similar valence-electron patterns.

Group Period Isotope Molecule

Q6. Which statement is most directly related to Unit 8: Periodic Classification of Elements?

Group Cell wall Gravity Photosynthesis

Q7. Why are Na and K placed in the same group?

Their atomic masses are equal Their valence-electron configuration is similar They are non-metals They are in the same period