Enter Title

formula

100

formula for water

H2O

200

Formula for oxide

MO

300

formula for Carbon dioxide

CO2

400

formula for magnesium oxide 

MgO

500

formula for zinc sulphate 

ZnSO4

True or false

100

Is water an element ?

No

200

Is dioxide an compound ?

Yes

300

what is the formula for sulfur ?

S8

400

what is the formula for nitric ?

HNO3

500

Which element has the highest in atomic number in periodic number ?

Oganesson = 118

facts

100

How many periods do the periodic table have ?

seven

200

Is electron negative or positive ? 

negative

300

Is proton negative or positive

positive

400

what are the vertical columns called ?

groups

500

How many elements do the periodic table have ?

118