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CHEM0504010
The figure shows the electron arrangements in a molecule of compound MN2. Which of the following pairs of elements could be M and N?
CHEM0504020
The diagram shows the formation of a compound.
The bond in the compound is formed by
CHEM0504030
The figure above shows the electron configuration for compound XY3. Which of the following pairs is the group of elements X and Y in the Periodic Table?
CHEM0504040
The molecular formula of ethane is C2H4. What is the total number of shared electrons in an ethene molecule? [proton number of carbon = 6; proton number of hydrogen = 1]
CHEM0504050
Which of the following pair of elements will form a compound by sharing electrons?
CHEM0504060
The proton number of X and Y are 16 and 9 respectively. What is the formula of the compound formed when X reacts with Y.
CHEM0504070
The figure above shows the electron arrangement in an atom of elements P and Q. What is the formula and type of bond for the compound formed when P reacts with Q?
CHEM0503070
The number of electrons for atoms P and Q are 8 and 9 respectively. Which of the following chemical formula and type of bonding are true for the compound formed between P and Q?