1.
已知过点\(A(0,1)\)的椭圆\(C\):\( \dfrac {x^{2}}{a^{2}}+ \dfrac {y^{2}}{b^{2}}=1(a > b > 0)\)的左右焦点分别为\(F_{1}\)、\(F_{2}\),\(B\)为椭圆上的任意一点,且\( \sqrt {3}|BF_{1}|\),\(|F_{1}F_{2}|\),\( \sqrt {3}|BF_{2}|\)成等差数列.
\((1)\)求椭圆\(C\)的标准方程;
\((2)\)直线\(l\):\(y=k(x+2)\)交椭圆于\(P\),\(Q\)两点,若点\(A\)始终在以\(PQ\)为直径的圆外,求实数\(k\)的取值范围.