Which of the following statements is(are) correct? (W) (1) \( \left[\mathrm{Ag}\left(\mathrm{NH}...

Which of the following statements is(are) correct?
(W)
(1) \( \left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right]^{+} \)is linear with sp hybridised \( \mathrm{Ag}^{+} \)ion.
(2) \( \mathrm{NiCl}_{4}{ }^{2-} \) has tetrahedral geometry.
(3) \( \left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+},\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \) and \( \left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-} \) have \( \mathrm{dsp}^{2} \) hybridisation of the metal ions.
(4) All the above