Question

An element reacts with oxygen to give a

compound with a high melting point. This

compound is also soluble in water. The element is

likely to be-

a) calcium b) carbon c) silicon d) iron

2. Metals oxides are _________ in nature.

a) acidic b) basic c) amphoteric d) neutral

3. The non – metal which can conduct electricity is-

a) Graphite b) iodine c) carbon d) diamond

4. Arrange copper, silver and aluminium in

increasing order of reactivity.

5. A list of common metals arranged in order of

their decreasing reactivity is known by what

name?

6. A ________ reactive metal displaces a ________

reactive metal from its salt solution.

7. Name the ion made by non - metals:

cation / anion.

8. Some metals do not react with water at all.

Name any one.

9. Metal which is the most abundant in earth’s

crust is-

a) Copper b) aluminium c) iron d) silver

10.The electronic configuration of an element ‘E’

(Z=16) is 2,8,6. Will it lose six electrons or gain tow ​

Answer 1

Answer:

1. silicon
2. basic
3. graphite
4. sorry for questions number 4
5. given in the picture
6. a more reactive metals displaced a less reactive metals.
7. anion
8. aluminum , iron and zinc
9. aluminum
10. no it not loss their electron or gain electron because it already is stable

I hope it will help full

Answer 2

Answer:

1. silicon

2. basic

3. graphite

4. copper > aluminium > silver

5. reactivity series

6. more , less

7. anion

8. aluminium , iron

9. aluminium

10. it will lose electron as it is already stable...

Explanation:

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