SC-4
Atoms, elements and compounds
Lower Sec Science · Secondary 1 · Hard · Atoms, elements and compounds
Element X is in Group 2 of the Periodic Table. Element Y is directly below X in the same group. Which statements about X and Y are true?
I. They have similar chemical properties.
II. They have the same number of electron shells.
III. They have the same number of electrons in their outermost shell.
I. They have similar chemical properties.
II. They have the same number of electron shells.
III. They have the same number of electrons in their outermost shell.
- I and III only
- I and II only
- II and III only
- I, II and III
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