2sec online quiz

if the valence level of The element contains 6 electrons so the element …….

• Inert and don’t form bonds

• active and form two bonds

• active and form 3bonds

• non active and form double bond

the element B contains three principle energy levels and the last sublevel( s) half filled

so the element is…

• active and lose 1e and its electronic configuration as same as Ar element

• active and gains 2 e and its electronic configuration as same as Ar element

• active and gains 7e and its electronic configuration as same as Kr element

• active and lose 1e and its electronic configuration as same as Kr element

the following table shows the electronic configuration of some elements ,Study this table and answer

1- Which any couple of elements can be reacted ?

• Y,T

• Y,X

• Y,Z

• X,T

Which any couple cannot be reacted?

• X,Z

• Z,T

• Y,T

• X,T

element can form a diatomic molecule ?

• T

• Z

• Y

• X

e following figure show the dot distribution of some elements , study it and answer

the question?

1- The elements which combine together

• X,E

• Y,Z

• X,Y

• X,Z

All the following elements can not combine together except .

• E,X

• Z,X

• Y,E

• X,E

- Lewis dot model shows….

a)

d)

• no, of protons in the nucleus b)no, of electrons of atom

• no, of electrons in the outer level energy

• no, of electrons which lose or share with atom