Chemistry
The oxide of the metallic element with three valence electrons, in its third shell is:
- Basic
- Weakly acidic
- Amphoteric
- Strongly basic
Related Questions
Assertion (A): Noble gases Ne, Ar have electron affinity zero.
Reason (R): Greater the value of electron affinity, the more electronegative is the element.
- Both A & R are true and R is the correct explanation of A.
- Both A & R are true but R is not the correct explanation of A.
- A is true but R is false
- A is false but R is true.
Assertion (A): Elements with high electronegativity are usually non-metals.
Reason (R): Non-metallic atoms have high ionisation potential & tend to gain electrons.
- Both A & R are true and R is the correct explanation of A.
- Both A & R are true but R is not the correct explanation of A.
- A is true but R is false
- A is false but R is true.
'ACl2' is the formula of an electrovalent solid. 'A' is likely to be in the same group in period 3, as the element given below present in period 2.
- Be
- Li
- C
- B
Metallic element 'X' in period 3, having valency 2, reacts with a non-metallic element 'Y' of the same period also having valency 2. The number of non-metallic atoms in the compound formed between 'X' & 'Y' is:
- 3
- 1
- 4
- 2