Question

i) Name two elements in same group of Periodic Table.
ii) Name a metalloid.
ii) Name one element, whose oxide is soluble in water.
iv) Name the element with highest ionization potential in period 4.
v) Name an element, whose oxide reacts vigorously with water.​

Answer 1

Answer:

2] The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Five elements are less frequently so classified: carbon, aluminium, selenium, polonium, and astatine.

3]Beryllium (Be)

4]helium has the largest first ionization energy, while francium has one of the lowest.

5] Sodium

Explanation: