Which one of the following contains both ionic and covalent bonds?

Consider the following statements about ionic bond:

1. Ionic bond comes into existence by the transference of electrons between the participating atoms.

2. The atom losing electron changes into cation while the other atom gaining electron converted into anion.

Which of the statements given above is/are correct?

Match List I with List II and select the correct answer using the codes given below the List.

       List I                                List II
(Covalent compound)        (Geometrical shape)

A. Water                          1. Angular

B. Ammonia                     2. Pyramid

C. Carbon dioxide           3. linear

D. Methane                     4. Tetrahedral

Consider the following statements.

1. Probability of finding the electron in the bonding molecular orbital is more than combining atomic orbitals.

2. Bonding molecular orbitals are formed when different sign of orbitals are overlapped.

Which of the statements given above is/are correct?

Which of the following element combinations will form ionic compounds?

$1. \mathrm{Ca} (\mathrm{Z}=20)$ and $\mathrm{Ti} (\mathrm{Z}=22)$

$2. \mathrm{Si} (\mathrm{Z}=14)$ and $Br (\mathrm{Z}=35)$

$3. Mg (\mathrm{Z}=12)$ and $\mathrm{Cl} (\mathrm{Z}=17)$

Select the correct answer using the codes given below.