Advertisements
Advertisements
Question
Give the symbol and valency of the following element and radical.
Hydroxide
Advertisements
Solution
| Element/Radical | Symbol | Valency |
| Hydroxide | OH | one |
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
What is meant by a group, in a periodic table?
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
What is a group in the periodic table?
Consider the following elements:
20Ca, 8O, 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be:
(i) very stable?
(ii) in group 2 of the periodic table?
(iii) in group 16 of the periodic table?
State the modern periodic law for the classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
Answer the following question in one sentence.
The modern periodic table is divided into which blocks?
Which of these belong to the same period?
| Element | A | B | C |
| Atomic number | 2 | 10 | 5 |
Name the metalloids in the first twenty elements.
Answer the following in respect of element \[\ce{_16^32S}\].
- Give its electronic configuration.
- To which group and period does it belon?
- What is its valency?
- Is it a metal or a non-metal?
- Is it a reducing agent or an oxidising agent?
- Give its formula with hydrogen.
