1) How ionic bond form? a) Metal atom transfer electron while non metal atom accepts electron b) non metal atom shares electron 2) When metal atom transfer electron it will form... a) anion b) cation 3) Sodium ion combine with chlodride ion. What formula of ionic bon should be? a) NaCl b) Na2Cl 4) How two ions which are different charge attract each other? a) Van der Waals forces b) Electrostatic forces 5) Calcium atom has 20 proton number. What is the electron arrangement for calcium atom? a) 2.8.8.2 b) 2.8.8.1

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