Biology; Chemistry; Physics: Post your doubts here!

[peacce]

y is it A? protons n electrons tu ek he amount hta na? tu B hona chyay?

 

[DaniyalK]

It has a +2 charge

 

[kirann]

ok does calcium oxide reacts with nitric acid? if so whats the product?

 

[peacce]

How does a magnesium atom form a bond with an oxygen atom?
A
by giving one pair of electrons to the oxygen atom
B
by sharing one pair of electrons, both electrons provided by the magnesium atom
C
by sharing two pairs of electrons, both pairs provided by the oxygen atom
D
by sharing two pairs of electrons, each atom donating one pair of electrons

 

[peacce]

s

It has a +2 charge

so? -_-

 

[kirann]

y is it A? protons n electrons tu ek he amount hta na? tu B hona chyay?

it has +2 charge so 2 electrons would be deducted..

 

[DaniyalK]

It will give salt (calcium nitrate) and water like any acid + metal oxide reaction.

 

[DaniyalK]

s

so? -_-

Man it lost 2 electrons to form an ion. So electrons will be 2 less than protons.

 

[peacce]

on wot basis wil aluminium wud b d ans?

 

[kirann]

How does a magnesium atom form a bond with an oxygen atom?
A
by giving one pair of electrons to the oxygen atom
B
by sharing one pair of electrons, both electrons provided by the magnesium atom
C
by sharing two pairs of electrons, both pairs provided by the oxygen atom
D
by sharing two pairs of electrons, each atom donating one pair of electrons

is it A?
mg is metal and oxygen is non metal so there would be ionic bonding

 

[peacce]

Man it lost 2 electrons to form an ion. So electrons will be 2 less than protons.

oh chemstry always cnfuses me

 

[peacce]

is it A?
mg is metal and oxygen is non metal so there would be ionic bonding

oh so its an ionic one betwen a metal n non metal

 

[DaniyalK]

Aluminium has the largest number of valence electrons (3)

 

[kirann]

oh so its an ionic one betwen a metal n non metal

it was A na?

 

[kirann]

its C
why fe ions are present?

 

[peacce]

it was A na?

yeah

 

[kirann]

yeah

 

[peacce]

its C
why fe ions are present?

becoz green color is given off

 

[kirann]

becoz green color is given off

haaaaaaaaaaaaaaann dekha nhi

 

[DaniyalK]

mass percentage = (total mr of that element/total mr of compound) * 100